Keene, C. (1981). The clue in the crossword cipher. Armada books.
Chicago Style (17th ed.) CitationKeene, Carolyn. The Clue in the Crossword Cipher. New York: Armada books, 1981.
ציטוט MLAKeene, Carolyn. The Clue in the Crossword Cipher. Armada books, 1981.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.