Dyfyniad APA

Silverman, J., Hughes, E., & Wienbroer, D. R. (2008). Rules of thumb: A guide for writers (7th ed.). New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Silverman, Jay, Elaine Hughes, and Diana Roberts Wienbroer. Rules of Thumb: A Guide for Writers. 7th ed. New York: McGraw-Hill, 2008.

Dyfyniad MLA

Silverman, Jay, Elaine Hughes, and Diana Roberts Wienbroer. Rules of Thumb: A Guide for Writers. 7th ed. New York: McGraw-Hill, 2008.

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