Dyfyniad APA

McNamara, B. J. (1997). Investigating astronomy: Model building and critical thinking. Mosby.

Dyfyniad Arddull Chicago

McNamara, Bernard J. Investigating Astronomy: Model Building and Critical Thinking. St. Louis: Mosby, 1997.

Dyfyniad MLA

McNamara, Bernard J. Investigating Astronomy: Model Building and Critical Thinking. Mosby, 1997.

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