Παραπομπή APA

Lewis,Norman. (1999). Word power made easy: : the most effective vocabulary builder in the english. Bloomsbury publishing.

Παραπομπή Chicago Style

Lewis,Norman. Word Power Made Easy: : The Most Effective Vocabulary Builder in the English. United Kingdom: Bloomsbury publishing, 1999.

Παραπομπή MLA

Lewis,Norman. Word Power Made Easy: : The Most Effective Vocabulary Builder in the English. Bloomsbury publishing, 1999.