International Congress on Leisure Activities in the Industrial Society, Brussels, 1974. (1974). Papers presented at the International Congress on Leisure Activities in the Industrial Society, Brussels, 5-7 April, 1974. Van Cle Foundation.
Citace podle Chicago (17th ed.)International Congress on Leisure Activities in the Industrial Society, Brussels, 1974. Papers Presented at the International Congress on Leisure Activities in the Industrial Society, Brussels, 5-7 April, 1974. Antwerp: Van Cle Foundation, 1974.
Citace podle MLA (8th ed.)International Congress on Leisure Activities in the Industrial Society, Brussels, 1974. Papers Presented at the International Congress on Leisure Activities in the Industrial Society, Brussels, 5-7 April, 1974. Van Cle Foundation, 1974.