Dyfyniad APA

Lovell, S. B. (1967). Our present, knowledge of the Universe. Univ. Press.

Dyfyniad Arddull Chicago

Lovell, Sir Bernard. Our Present, Knowledge of the Universe. Australia, Melbourne: Univ. Press, 1967.

Dyfyniad MLA

Lovell, Sir Bernard. Our Present, Knowledge of the Universe. Univ. Press, 1967.

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