Cita APA

Langford, W. A. (1978). The wildlife valuation problem: A critical review of economic approaches. Otawa: Canadian Wildlife Service.

Citación estilo Chicago

Langford, William A. The Wildlife Valuation Problem: A Critical Review of Economic Approaches. Otawa: Canadian Wildlife Service, 1978.

Cita MLA

Langford, William A. The Wildlife Valuation Problem: A Critical Review of Economic Approaches. Otawa: Canadian Wildlife Service, 1978.