APA

Memoirs of the New York Botanical Garden, . (1968). Memoirs of the New York Botanical Garden. New York: New York Botanical Garden.

Chicago

Memoirs of the New York Botanical Garden, . 1968. Memoirs of the New York Botanical Garden. New York: New York Botanical Garden.

Harvard

Memoirs of the New York Botanical Garden, . (1968). Memoirs of the New York Botanical Garden. New York: New York Botanical Garden.

MLA

Memoirs of the New York Botanical Garden, . Memoirs of the New York Botanical Garden. New York: New York Botanical Garden. 1968.