Dyfyniad APA

Pagel, L. G., & Norstrom, B. (2011). Proofreading & editing precision. South-Western Cengage Learning.

Dyfyniad Arddull Chicago

Pagel, Larry G., and Barbara Norstrom. Proofreading & Editing Precision. Mason , Ohio: South-Western Cengage Learning, 2011.

Dyfyniad MLA

Pagel, Larry G., and Barbara Norstrom. Proofreading & Editing Precision. South-Western Cengage Learning, 2011.

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