APA aipamena

Lovell, B. (1967). Our present knowledge of the universe QB44 .L. Harvard University Press.

Chicago Style aipamena

Lovell, B. Our Present Knowledge of the Universe QB44 .L. Cambridge, Mass: Harvard University Press, 1967.

MLA aipamena

Lovell, B. Our Present Knowledge of the Universe QB44 .L. Harvard University Press, 1967.