Dyfyniad APA

Hess, F. C. (1955). Chemistry made simple. Double Day.

Dyfyniad Arddull Chicago

Hess, Fred C. Chemistry Made Simple. Garden City, NY: Double Day, 1955.

Dyfyniad MLA

Hess, Fred C. Chemistry Made Simple. Double Day, 1955.

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