Παραπομπή APA

Goodger, E. M. (1970). Principles of Spaceflight Propulsion. Pergamon Press.

Παραπομπή Chicago Style

Goodger, E M. Principles of Spaceflight Propulsion. Oxford: Pergamon Press, 1970.

Παραπομπή MLA

Goodger, E M. Principles of Spaceflight Propulsion. Pergamon Press, 1970.