Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

Richek, Margaret Ann. The World of Words: Vocabulary for College Success. Eight edition. Australia: Wadsworth/Cengage Learning, 2011.

Citatione MLA (9a ed.)

Richek, Margaret Ann. The World of Words: Vocabulary for College Success. Eight edition. Wadsworth/Cengage Learning, 2011.