APA (7th ed.) Citation

McCallum, J. D. (1975). The encyclopedia of world boxing champions since 1882. Chilton Book Co..

Chicago Style (17th ed.) Citation

McCallum, John D. The Encyclopedia of World Boxing Champions Since 1882. Radnor, Pa.: Chilton Book Co., 1975.

MLA (9th ed.) Citation

McCallum, John D. The Encyclopedia of World Boxing Champions Since 1882. Chilton Book Co., 1975.