Bowen, W. (2013). Happy this year!: The secret to getting happy once and for all. Grand Harbor Press.
Style de citation Chicago (17e éd.)Bowen, Will. Happy This Year!: The Secret to Getting Happy Once and for All. Grand Haven, MI: Grand Harbor Press, 2013.
Style de citation MLA (8e éd.)Bowen, Will. Happy This Year!: The Secret to Getting Happy Once and for All. Grand Harbor Press, 2013.
Attention : ces citations peuvent ne pas être correctes à 100%.