APA (7. basım) Alıntı

Fredrickson, B. (2009). Positivity (First edition.). Three Rivers Press.

Chicago Style (17. basım) Atıf

Fredrickson, Barbara. Positivity. First edition. New York: Three Rivers Press, 2009.

MLA (9th ed.) Atıf

Fredrickson, Barbara. Positivity. First edition. Three Rivers Press, 2009.