Nicholson, M. (1957). A dictionary of American-English usage: Based on Fowler's Modern English usage. Oxford University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Nicholson, Margaret. A Dictionary of American-English Usage: Based on Fowler's Modern English Usage. New York: Oxford University Press, 1957.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Nicholson, Margaret. A Dictionary of American-English Usage: Based on Fowler's Modern English Usage. Oxford University Press, 1957.