Παραπομπή APA

Ruchlis, H., & Hirsh, A. (1958). Orbit: A picture story of force and motion. Harper.

Παραπομπή Chicago Style

Ruchlis, Hyman, και Alice Hirsh. Orbit: A Picture Story of Force and Motion. New York: Harper, 1958.

Παραπομπή MLA

Ruchlis, Hyman, και Alice Hirsh. Orbit: A Picture Story of Force and Motion. Harper, 1958.