SpringerLink (Online service), NATO Advanced Research Workshop on Contributions of National Parks and Protected Areas to Heritage, Conservation, Tourism, and Sustainable Development, Nelson, J. G., & Serafin, R. (1997). National parks and protected areas: Keystones to conservation and sustainable development. Springer.
Chicago Style (17th ed.) CitationSpringerLink (Online service), Conservation NATO Advanced Research Workshop on Contributions of National Parks and Protected Areas to Heritage, James Gordon Nelson, and Rafal Serafin. National Parks and Protected Areas: Keystones to Conservation and Sustainable Development. Berlin ; New York: Springer, 1997.
MLA (9th ed.) CitationSpringerLink (Online service), et al. National Parks and Protected Areas: Keystones to Conservation and Sustainable Development. Springer, 1997.