Não informado. (1984). World leisure & recreation. World Leisure and Recreation Association.
Chicagoスタイル(17版)引用形式Não informado. World Leisure & Recreation. New York: World Leisure and Recreation Association, 1984.
MLA(8版)引用形式Não informado. World Leisure & Recreation. World Leisure and Recreation Association, 1984.
警告: この引用は必ずしも正確ではありません.