Cita APA (7a ed.)

Asimov, I. (1975). Asimov on astronomy. Anchor Books.

Cita Chicago Style (17a ed.)

Asimov, Isaac. Asimov on Astronomy. Garden City: Anchor Books, 1975.

Cita MLA (9a ed.)

Asimov, Isaac. Asimov on Astronomy. Anchor Books, 1975.