APA

Hooker W. J., . (1970). Species filicum; being descriptions of the known ferns, particularly of such as exist in the author's herbarium, or are with sufficient accuracy described in works to which he has had access; accompanied with numerous figures. New York: Verlag von J. Cramer.

Chicago

Hooker William Jackson, . 1970. Species filicum; being descriptions of the known ferns, particularly of such as exist in the author's herbarium, or are with sufficient accuracy described in works to which he has had access; accompanied with numerous figures. New York: Verlag von J. Cramer.

Harvard

Hooker W. J., . (1970). Species filicum; being descriptions of the known ferns, particularly of such as exist in the author's herbarium, or are with sufficient accuracy described in works to which he has had access; accompanied with numerous figures. New York: Verlag von J. Cramer.

MLA

Hooker William Jackson, . Species filicum; being descriptions of the known ferns, particularly of such as exist in the author's herbarium, or are with sufficient accuracy described in works to which he has had access; accompanied with numerous figures. New York: Verlag von J. Cramer. 1970.