Cita APA (7a ed.)

Kopal, Z. (1972). Advances in astronomy and astrophysics. Academic Press.

Cita Chicago Style (17a ed.)

Kopal, Zden�ek. Advances in Astronomy and Astrophysics. New York: Academic Press, 1972.

Cita MLA (8a ed.)

Kopal, Zden�ek. Advances in Astronomy and Astrophysics. Academic Press, 1972.