Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Thomas, P. J., Hicks, R. D., Chyba, C. F., & McKay, C. P. (2006). Comets and the Origin and Evolution of Life. Springer Berlin Heidelberg.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Paul J. Thomas, Roland Dean Hicks, Christopher F. Chyba, και Christopher P. McKay. Comets and the Origin and Evolution of Life. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Comets and the Origin and Evolution of Life. Springer Berlin Heidelberg, 2006.