Dyfyniad APA

Oxtoby, D. W., & Gillis, H. P. (1999). Principles of modern chemistry: :4th ed (4th ed.). Harcourt Brace College Publishers.

Dyfyniad Arddull Chicago

Oxtoby, David W., and H P. Gillis. Principles of Modern Chemistry: :4th Ed. 4th ed. New York: Harcourt Brace College Publishers, 1999.

Dyfyniad MLA

Oxtoby, David W., and H P. Gillis. Principles of Modern Chemistry: :4th Ed. 4th ed. Harcourt Brace College Publishers, 1999.

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