Dyfyniad APA

Tillery, B. W. (1993). Physical science (2nd ed.). Wm. C. Brown.

Dyfyniad Arddull Chicago

Tillery, Bill W. Physical Science. 2nd ed. Dubuque, Iowa: Wm. C. Brown, 1993.

Dyfyniad MLA

Tillery, Bill W. Physical Science. 2nd ed. Wm. C. Brown, 1993.

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