Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.