Cita APA (7a ed.)

Fenson, L. (1990). Human development 90/91 (18ª ed.). The Dushkin.

Cita Chicago Style (17a ed.)

Fenson, Larry. Human Development 90/91. 18ª ed. The Dushkin, 1990.

Cita MLA (9a ed.)

Fenson, Larry. Human Development 90/91. 18ª ed. The Dushkin, 1990.