APA引文

Leland, J., & Petkoff, R. (2018). Happiness is a choice you make: Lessons from a year among the oldest old (Unabridged.). Macmillan Audio.

Chicago Style (17th ed.) Citation

Leland, John, and Robert Petkoff. Happiness Is a Choice You Make: Lessons from a Year Among the Oldest Old. Unabridged. New York: Macmillan Audio, 2018.

MLA引文

Leland, John, and Robert Petkoff. Happiness Is a Choice You Make: Lessons from a Year Among the Oldest Old. Unabridged. Macmillan Audio, 2018.

警告：這些引文格式不一定是100％准確.