APA

HAMMOND W., . (1968). PLANTS. New York: LANCER BOOKS.

Chicago

HAMMOND WINIFRED, . 1968. PLANTS. New York: LANCER BOOKS.

Harvard

HAMMOND W., . (1968). PLANTS. New York: LANCER BOOKS.

MLA

HAMMOND WINIFRED, . PLANTS. New York: LANCER BOOKS. 1968.