APA

Simmons J. B., North Atlantic Treaty Organization, . (1976). Conservation of threatened plants: [Proceedings...]. New York: Published in coordination with NATO Scientific Affairs Division by Plenum Press.

Chicago

Simmons J B, North Atlantic Treaty Organization, . 1976. Conservation of threatened plants: [Proceedings...]. New York: Published in coordination with NATO Scientific Affairs Division by Plenum Press.

Harvard

Simmons J. B., North Atlantic Treaty Organization, . (1976). Conservation of threatened plants: [Proceedings...]. New York: Published in coordination with NATO Scientific Affairs Division by Plenum Press.

MLA

Simmons J B, North Atlantic Treaty Organization, . Conservation of threatened plants: [Proceedings...]. New York: Published in coordination with NATO Scientific Affairs Division by Plenum Press. 1976.