APA (7th ed.) Citation

(1977). Extinction is forever: Threatened and endangered species of plants in the Americas and their significance in ecosystems today and in the future ; proceedings of a symposium held at the New York Botanical Garden, May 11 - 13, 1976. Maar.

Chicago Style (17th ed.) Citation

Extinction Is Forever: Threatened and Endangered Species of Plants in the Americas and Their Significance in Ecosystems Today and in the Future ; Proceedings of a Symposium Held at the New York Botanical Garden, May 11 - 13, 1976. Poughkeepsie, New York: Maar, 1977.

MLA (9th ed.) Citation

Extinction Is Forever: Threatened and Endangered Species of Plants in the Americas and Their Significance in Ecosystems Today and in the Future ; Proceedings of a Symposium Held at the New York Botanical Garden, May 11 - 13, 1976. Maar, 1977.