DONNELLY, R. J., HELMS, W. G., & MITCHELL, E. D. (1958). Active games and contests.-- 2nd ed. The Ronald Press.
Lua i Stíl Chicago (17ú heag.)DONNELLY, Richard J., William G. HELMS, agus Elmer D. MITCHELL. Active Games and Contests.-- 2nd Ed. New York: The Ronald Press, 1958.
Lua MLA (9ú heag.)DONNELLY, Richard J., et al. Active Games and Contests.-- 2nd Ed. The Ronald Press, 1958.
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