Dyfyniad APA

Richek, M. A. (2011). The world of words: Vocabulary for college success (8th ed.). Wadsworth/Cengage Learning.

Dyfyniad Arddull Chicago

Richek, Margaret Ann. The World of Words: Vocabulary for College Success. 8th ed. Boston: Wadsworth/Cengage Learning, 2011.

Dyfyniad MLA

Richek, Margaret Ann. The World of Words: Vocabulary for College Success. 8th ed. Wadsworth/Cengage Learning, 2011.

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