Bannon, J. J. (1981). Problem solving in recreation and parks (2d ed.). Prentice-Hall.
Citace podle Chicago (17th ed.)Bannon, Joseph J. Problem Solving in Recreation and Parks. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1981.
Citace podle MLA (8th ed.)Bannon, Joseph J. Problem Solving in Recreation and Parks. 2d ed. Prentice-Hall, 1981.
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