There were many books that could improve one's speaking skills. The specific books that were suitable depended on one's needs and interests. Here are some books that might be helpful: The Art of Communication: This is a classic communication guide that covers a variety of communication techniques and strategies that can help people communicate better with others. 2. Speech: The Power of Words: This book delves deeply into the power of language and how to use it to influence others. It provides many practical techniques and strategies to help people improve their speaking skills. Speech: The Power of Persuasion: This book explains how to effectively speak and express your ideas, including how to build a confident image, how to master rhythm and tone, and how to use visual language. 4 The Secret of Good Speaking: This book provides some practical techniques and strategies to help people improve their oral skills. It covered how to pronounce accurately, how to control the speed of speech, how to use expressions and body language, and so on. Emotional Language: This book explains how to use emotional language to influence others, including how to express one's emotions and how to respond to others 'emotions. It could help people improve their emotional intelligence and speaking skills. These books are just one of the many books that can improve one's speaking skills. The readers can choose books that suit their own needs and interests to read.