Funk, W. J., & Lewis, N. (1970). 30 days to a more powerful vocabulary (Newly rev. by Norman Lewis.). Pocket Books.
Chicago Style (17th ed.) CitationFunk, Wilfred John, and Norman Lewis. 30 Days to a More Powerful Vocabulary. Newly rev. by Norman Lewis. New York: Pocket Books, 1970.
ציטוט MLAFunk, Wilfred John, and Norman Lewis. 30 Days to a More Powerful Vocabulary. Newly rev. by Norman Lewis. Pocket Books, 1970.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.