Dyfyniad APA

Breithaupt, J. (2000). Teach yourself 101 key ideas: Stronomy. Teach Yourself.

Dyfyniad Arddull Chicago

Breithaupt, Jim. Teach Yourself 101 Key Ideas: Stronomy. London: Teach Yourself, 2000.

Dyfyniad MLA

Breithaupt, Jim. Teach Yourself 101 Key Ideas: Stronomy. Teach Yourself, 2000.

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