Dyfyniad APA

Chaisson, E. (1998). Astronomy: A beginner's guide to the universe (2nd ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Chaisson, Eric. Astronomy: A Beginner's Guide to the Universe. 2nd ed. New Jersey: Prentice Hall, 1998.

Dyfyniad MLA

Chaisson, Eric. Astronomy: A Beginner's Guide to the Universe. 2nd ed. Prentice Hall, 1998.

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