Kelsey, K. (1984). A third book of number puzzles. Muller.
Chicago Style (17th ed.) CitationKelsey, Kenneth. A Third Book of Number Puzzles. London: Muller, 1984.
MLA (8th ed.) CitationKelsey, Kenneth. A Third Book of Number Puzzles. Muller, 1984.
Warning: These citations may not always be 100% accurate.