Dyfyniad APA

Ruchlis, H., & Hirsh, A. (1961). The wonder of heat energy: A picture story of the vital part heat plays in our world. Harper.

Dyfyniad Arddull Chicago

Ruchlis, Hyman, and Alice Hirsh. The Wonder of Heat Energy: A Picture Story of the Vital Part Heat Plays in Our World. New York: Harper, 1961.

Dyfyniad MLA

Ruchlis, Hyman, and Alice Hirsh. The Wonder of Heat Energy: A Picture Story of the Vital Part Heat Plays in Our World. Harper, 1961.

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