APA (7. basım) Alıntı

Woerkom, A. J. J. v. (1948). On the origin of comets.

Chicago Style (17. basım) Atıf

Woerkom, Adrianus Jan Jasper van. On the Origin of Comets. 1948.

MLA (8th ed.) Atıf

Woerkom, Adrianus Jan Jasper van. On the Origin of Comets. 1948.