Dyfyniad APA

Cottrell, A., & Lovell, B. (1976). Science and the Universe. Mitchellbeazley.

Dyfyniad Arddull Chicago

Cottrell, Alan, and Bernard Lovell. Science and the Universe. London: Mitchellbeazley, 1976.

Dyfyniad MLA

Cottrell, Alan, and Bernard Lovell. Science and the Universe. Mitchellbeazley, 1976.

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