APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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