Dyfyniad APA

Kopal, Z. e. (1972). Advances in astronomy and astrophysics: 9v. Academic Press.

Dyfyniad Arddull Chicago

Kopal, Zdenek ed. Advances in Astronomy and Astrophysics: 9v. New York: Academic Press, 1972.

Dyfyniad MLA

Kopal, Zdenek ed. Advances in Astronomy and Astrophysics: 9v. Academic Press, 1972.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.