Michael West. (1953). A general service list of English words: With semantic frequencies and a supplementary wordlist for the writing of popular science and technology. Longman.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Michael West. A General Service List of English Words: With Semantic Frequencies and a Supplementary Wordlist for the Writing of Popular Science and Technology. London: Longman, 1953.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Michael West. A General Service List of English Words: With Semantic Frequencies and a Supplementary Wordlist for the Writing of Popular Science and Technology. Longman, 1953.
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