Dyfyniad APA

Silverman, J., Hughes, E., & Wienbroer, D. R. (2009). Rules of thumb: A guide for writers. Boston: McGraw-Hill.

Dyfyniad Arddull Chicago

Silverman, Jay., Elaine Hughes, và Diana Roberts Wienbroer. Rules of Thumb: A Guide for Writers. Boston: McGraw-Hill, 2009.

Dyfyniad MLA

Silverman, Jay., Elaine Hughes, và Diana Roberts Wienbroer. Rules of Thumb: A Guide for Writers. Boston: McGraw-Hill, 2009.

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