Butler, S. (1986). Non-competitive games for people of all ages: Everyone's a winner. Bethany house.
Citace podle Chicago (17th ed.)Butler, Susan. Non-competitive Games for People of All Ages: Everyone's a Winner. Minneapolis: Bethany house, 1986.
Citace podle MLA (9th ed.)Butler, Susan. Non-competitive Games for People of All Ages: Everyone's a Winner. Bethany house, 1986.
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