Cita APA (7th ed.)

World Conservation Monitoring Centre. (1992). Protected areas of the world: A review of national systems. International Union for Conservation of Nature and Natural Resources.

Cita Chicago (17th ed.)

World Conservation Monitoring Centre. Protected Areas of the World: A Review of National Systems. Gland, Switzerland: International Union for Conservation of Nature and Natural Resources, 1992.

Cita MLA (9th ed.)

World Conservation Monitoring Centre. Protected Areas of the World: A Review of National Systems. International Union for Conservation of Nature and Natural Resources, 1992.

Atenció: Aquestes cites poden no estar 100% correctes.