Rubin, G. (2017). The four tendencies: The indispensable personality profiles that reveal how to make your life better (and other people's lives better, too) (Unabridged.). Random House Audio ; Books on Tape.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Rubin, Gretchen. The Four Tendencies: The Indispensable Personality Profiles That Reveal How to Make Your Life Better (and Other People's Lives Better, Too). Unabridged. New York : [Westminster, MD]: Random House Audio ; Books on Tape, 2017.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Rubin, Gretchen. The Four Tendencies: The Indispensable Personality Profiles That Reveal How to Make Your Life Better (and Other People's Lives Better, Too). Unabridged. Random House Audio ; Books on Tape, 2017.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.