The Most Underrated Product Management Skill: Influence Without Authority by Sachin Rekhi

How to be persuasive by Jackie Bavaro

How to Influence Others by Tanuja Gopal

Leading Through Influence the Clever PM Way — Part 1: Social Capital by The Clever PM

The 21 Principles of Persuasion by Jason Nazar

Leadership and Influence for Product Managers by Jeremy Horn​

The Best Books about Gaining Influence

Influence: The Psychology of Persuasion by Robert B. Cialdini
This book explains the psychology of why people say “yes”—and how to apply these understandings. Dr. Robert Cialdini is the seminal expert in the rapidly expanding field of influence and persuasion.  You’ll learn the six universal principles, how to use them to become a skilled persuader—and how to defend yourself against them. Perfect for people in all walks of life, the principles of Influence will move you toward profound personal change and act as a driving force for your success.

How to Win Friends and Influence People by Dale Carnegie
The rock-solid, time-tested advice in this book has carried thousands of now famous people up the ladder of success in their business and personal lives for more than sixty years. In this book you will learn three fundamental techniques in handling people, the six ways to make people like you, the twelve ways to win people to you way of thinking, the nine ways to change people without arousing resentment and more.

Influence Without Authority by Allan R. Cohen
In organizations today, getting work done requires political and collaborative skills. That’s why the first edition of this book has been widely adopted as a guide for consultants, project leaders, staff experts, and anyone else who does not have direct authority but who is nevertheless accountable for results – like product managers. This classic work gives you powerful techniques for cutting through interpersonal and interdepartmental barriers, and motivating people to lend you their support, time, and resources.

Made to Stick: Why some ideas take hold and others come unstuck by Chip Heath
Why do some ideas thrive while others die? And how do we improve the chances of worthy ideas? In this book, Chip and Dan Heath tackle head-on these vexing questions. Inside, the brothers Heath reveal the anatomy of ideas that stick and explain ways to make ideas stickier. In this indispensable guide, we discover that sticky messages of all kinds – from the infamous “kidney theft ring” hoax to a coach’s lessons on sportsmanship to a vision for a new product at Sony – draw their power from the same six traits.

Magic Words: The Science and Secrets Behind Seven Words That Motivate, Engage, and Influence by Tim David
Words inspire. Words influence. Words sell. But why? And how can we use words to better communicate our message so it truly connects? By exploring seven “magic words”, Tim David explains the important psychology behind how what we say affects those around us in business and in life. Full of startling scientific research, humorous anecdotes, and word-for-word scripts, David lays out the secrets of exactly what to say (and what to STOP saying) so our words have the magical effect we desire.