APA (7th ed.) Zitazioa
Meyers, J. N. Vocabulary and spelling success in 20 minutes a day. Goodwill Pub.
Chicago Style (17th ed.) Zitazioa
Meyers, Judith N. Vocabulary and Spelling Success in 20 Minutes a Day. New Delhi: Goodwill Pub.
MLA (9th ed.) Zitazioa
Meyers, Judith N. Vocabulary and Spelling Success in 20 Minutes a Day. Goodwill Pub.
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