Lewis, N. (2004). Word power made easy: The most effective vocabulary builder in the English language (2nd ed.). Bloomsbury Publishing.
শিকাগো স্টাইলে সাইটেশনLewis, Norman. Word Power Made Easy: The Most Effective Vocabulary Builder in the English Language. 2nd ed. London: Bloomsbury Publishing, 2004.
এমএলএ সাইটেশনLewis, Norman. Word Power Made Easy: The Most Effective Vocabulary Builder in the English Language. 2nd ed. Bloomsbury Publishing, 2004.
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