Vanderheltz, M., & Vandersheltz, N. (1973). The official handbook of world sexual records. New York: Pinnacle Books.
Chicago Style (17th ed.) CitationVanderheltz, Maurice, and Nina Vandersheltz. The Official Handbook of World Sexual Records. New York: Pinnacle Books, 1973.
MLA (8th ed.) CitationVanderheltz, Maurice, and Nina Vandersheltz. The Official Handbook of World Sexual Records. New York: Pinnacle Books, 1973.
Warning: These citations may not always be 100% accurate.