Dyfyniad APA

Goldberg, D. E., & Cullen, K. E. (2003). Beginning chemistry. Chicago: McGraw-Hill.

Dyfyniad Arddull Chicago

Goldberg, David E., và Katherine E. Cullen. Beginning Chemistry. Chicago: McGraw-Hill, 2003.

Dyfyniad MLA

Goldberg, David E., và Katherine E. Cullen. Beginning Chemistry. Chicago: McGraw-Hill, 2003.

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