Cita APA

Machlis, G. E. (1985). The State of the worlds parks: An internation assessment for resource management, policy and research. Colorado: Westview Press.

Citación estilo Chicago

Machlis, Gary E. The State of the Worlds Parks: An Internation Assessment for Resource Management, Policy and Research. Colorado: Westview Press, 1985.

Cita MLA

Machlis, Gary E. The State of the Worlds Parks: An Internation Assessment for Resource Management, Policy and Research. Colorado: Westview Press, 1985.