Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Wright, J., & Leonard, M. L. (2002). The Evolution of Begging: Competition, Cooperation and Communication. Springer Netherlands.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Jonathan Wright, και Marty L. Leonard. The Evolution of Begging: Competition, Cooperation and Communication. Dordrecht: Springer Netherlands, 2002.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. The Evolution of Begging: Competition, Cooperation and Communication. Springer Netherlands, 2002.