APA引文

Oprea, E., & Underwood, C. (2016). The 4 x 4 diet: 4 key foods, 4-minute workouts, four weeks to the body you want (First edition.). Harmony Books.

Chicago Style (17th ed.) Citation

Oprea, Erin, and Carrie Underwood. The 4 X 4 Diet: 4 Key Foods, 4-minute Workouts, Four Weeks to the Body You Want. First edition. New York: Harmony Books, 2016.

MLA引文

Oprea, Erin, and Carrie Underwood. The 4 X 4 Diet: 4 Key Foods, 4-minute Workouts, Four Weeks to the Body You Want. First edition. Harmony Books, 2016.

警告：這些引文格式不一定是100％准確.