The state of the world's parks : an international assessment for resource management, policy, and research

MLA

Machlis, Gary E. and David L. Tichnell. The state of the world's parks : an international assessment for resource management, policy, and research. Boulder, Colo. : Westview Press, 1985.

APA

Machlis, G. & Tichnell, D. (1985). The state of the world's parks : an international assessment for resource management, policy, and research. Boulder, Colo. : Westview Press.

Chicago

Machlis, Gary E. and David L. Tichnell. The state of the world's parks : an international assessment for resource management, policy, and research. Boulder, Colo. : Westview Press, 1985.