APA (7th ed.) Zitazioa
Romero, D. B. (1992). Vocabulary improvement: Words made easy. Crisp Publications.
Chicago Style (17th ed.) Zitazioa
Romero, Diana Bonet. Vocabulary Improvement: Words Made Easy. Los Altos, Calif.: Crisp Publications, 1992.
MLA (9th ed.) Zitazioa
Romero, Diana Bonet. Vocabulary Improvement: Words Made Easy. Crisp Publications, 1992.
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