Style de citation APA (7e éd.)

Bayles, S. (2007). Laugh and learn about childbirth (New and updated.). Expect This L.L.C..

Style de citation Chicago (17e éd.)

Bayles, Sheri. Laugh and Learn About Childbirth. New and updated. [United States]: Expect This L.L.C., 2007.

Style de citation MLA (8e éd.)

Bayles, Sheri. Laugh and Learn About Childbirth. New and updated. Expect This L.L.C., 2007.

Attention : ces citations peuvent ne pas être correctes à 100%.