Gaya APA

Mednick, S, C, &, E, M. (2006). Take a nap! : Change your life. The scientific plan to make you smarter, healthier, more productive. . New York: New York Workman Publishing.

Gaya MLA

Mednick, Sara, C., &, Ehrman,, Mark. "Take a nap! : Change your life. The scientific plan to make you smarter, healthier, more productive. ". New York: New York Workman Publishing, 2006. Buku.