APA

Durand H., . (1949). Field book of common ferns: for identifying fifty conspicuous species of Eastern America, with directions for their culture. New York: Putman.

Chicago

Durand Herbert, . 1949. Field book of common ferns: for identifying fifty conspicuous species of Eastern America, with directions for their culture. New York: Putman.

Harvard

Durand H., . (1949). Field book of common ferns: for identifying fifty conspicuous species of Eastern America, with directions for their culture. New York: Putman.

MLA

Durand Herbert, . Field book of common ferns: for identifying fifty conspicuous species of Eastern America, with directions for their culture. New York: Putman. 1949.