Cita APA (7a ed.)

West, S., Pen, I., & Griffin, A. (2002). Cooperation and competition between relatives.

Cita Chicago Style (17a ed.)

West, SA, I. Pen, y A. Griffin. Cooperation and Competition Between Relatives. 2002.

Cita MLA (9a ed.)

West, SA, et al. Cooperation and Competition Between Relatives. 2002.