Cita APA (7a ed.)

Lefrancois, G. R. (2001). Of children: An introduction to child and adolescent development (9th edition.). Wadsworth.

Cita Chicago Style (17a ed.)

Lefrancois, Guy R. Of Children: An Introduction to Child and Adolescent Development. 9th edition. Belmont, Calif: Wadsworth, 2001.

Cita MLA (9a ed.)

Lefrancois, Guy R. Of Children: An Introduction to Child and Adolescent Development. 9th edition. Wadsworth, 2001.