IUCN. The World Conservation Union. (1999). Parks: Bioregional approach to protected areas. IUNC.
Chicago Style (17th ed.) CitationIUCN. The World Conservation Union. Parks: Bioregional Approach to Protected Areas. Gland: IUNC, 1999.
MLA (9th ed.) CitationIUCN. The World Conservation Union. Parks: Bioregional Approach to Protected Areas. IUNC, 1999.