Cita APA (7a ed.)

Moore, P., & Ball, L. (1978). The observer's book of astronomy (6th revised ed.). F. Warne.

Cita Chicago Style (17a ed.)

Moore, Patrick, y L.F Ball. The Observer's Book of Astronomy. 6th revised ed. London: F. Warne, 1978.

Cita MLA (9a ed.)

Moore, Patrick, y L.F Ball. The Observer's Book of Astronomy. 6th revised ed. F. Warne, 1978.