Crossley, J. C., & Jamieson, L. M. (1988). Introduction to commercial and entrepreneurial recreation. Sagamore Publishing.
Citace podle Chicago (17th ed.)Crossley, John C., a Lynn Marie Jamieson. Introduction to Commercial and Entrepreneurial Recreation. Champaign, IL: Sagamore Publishing, 1988.
Citace podle MLA (9th ed.)Crossley, John C., a Lynn Marie Jamieson. Introduction to Commercial and Entrepreneurial Recreation. Sagamore Publishing, 1988.
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