Dyfyniad APA

Chaison, E. (1996). Astronomy today. Upper Saddle River, New Jersey: Prentice-Hall.

Dyfyniad Arddull Chicago

Chaison, Eric. Astronomy Today. Upper Saddle River, New Jersey: Prentice-Hall, 1996.

Dyfyniad MLA

Chaison, Eric. Astronomy Today. Upper Saddle River, New Jersey: Prentice-Hall, 1996.

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