The American Psychological Association (APA), founded in 1892, is the leading scientific and professional organization representing psychology in the United States, with 54 divisions and more than 172,000 members. It is the publisher of the widely adopted *Publication Manual of the American Psychological Association*, now in its seventh edition (2020), which serves as the official source for APA Style and has sold millions of copies worldwide in multiple languages.

Miguel Ángel Ruiz Macías, better known as Don Miguel Ruiz, is a Mexican author of Toltec spiritual and personal development texts..

Dr. Paul McKee (October 14, 1898 – November 26, 1974) was a university professor and writer of children's books, widely regarded as "one of the most eminent scholars in his field." He earned a doctorate and authored works that remain associated with early reading education. A separate Paul McKee authored the *Kentucky Bucket List Adventure Guide*, exploring 100 offbeat destinations in the state.

Sun Tzu was a Chinese military general, strategist, philosopher, and writer who lived during the Eastern Zhou period.

Jane Austen was an English writer known primarily for her six novels, which implicitly interpret, critique, and comment on the English landed gentry at the end of the 18th century..