Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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