Walsh, P. (2011). Lighten up: Love what you have, have what you need, be happier with less (1st Free Press hardcover ed.). Free Press.
Style de citation Chicago (17e éd.)Walsh, Peter. Lighten Up: Love What You Have, Have What You Need, Be Happier with Less. 1st Free Press hardcover ed. New York: Free Press, 2011.
Style de citation MLA (8e éd.)Walsh, Peter. Lighten Up: Love What You Have, Have What You Need, Be Happier with Less. 1st Free Press hardcover ed. Free Press, 2011.
Attention : ces citations peuvent ne pas être correctes à 100%.