APA

Stevens P. F., . (1925). Plant disease fungi. New York: Macmillan.

Chicago

Stevens Peter F, . 1925. Plant disease fungi. New York: Macmillan.

Harvard

Stevens P. F., . (1925). Plant disease fungi. New York: Macmillan.

MLA

Stevens Peter F, . Plant disease fungi. New York: Macmillan. 1925.