APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.