(2015). O's little book of happiness (First edition.). Flatiron Books.
Style de citation Chicago (17e éd.)O's Little Book of Happiness. First edition. New York: Flatiron Books, 2015.
Style de citation MLA (8e éd.)O's Little Book of Happiness. First edition. Flatiron Books, 2015.
Attention : ces citations peuvent ne pas être correctes à 100%.