Dyfyniad APA

Allred, R. A., & Wolinski, J. T. (1990). McGraw-Hill spelling. McGraw-Hill School Division.

Dyfyniad Arddull Chicago

Allred, Ruel A., and John T. Wolinski. McGraw-Hill Spelling. New York: McGraw-Hill School Division, 1990.

Dyfyniad MLA

Allred, Ruel A., and John T. Wolinski. McGraw-Hill Spelling. McGraw-Hill School Division, 1990.

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