Παραπομπή APA

Scheffler, H. (1977). Physics of the galaxy and interstellar matter. Springer-Verlag.

Παραπομπή Chicago Style

Scheffler, H. Physics of the Galaxy and Interstellar Matter. New York: Springer-Verlag, 1977.

Παραπομπή MLA

Scheffler, H. Physics of the Galaxy and Interstellar Matter. Springer-Verlag, 1977.