APA
GAUMANN E., . (1950). Principles of plant infection: A text of general plant pathology for biologists, agriculturists, foresters and plant breeders. New York: Hafner.
Chicago
GAUMANN Ernst, . 1950. Principles of plant infection: A text of general plant pathology for biologists, agriculturists, foresters and plant breeders. New York: Hafner.
Harvard
GAUMANN E., . (1950). Principles of plant infection: A text of general plant pathology for biologists, agriculturists, foresters and plant breeders. New York: Hafner.
MLA
GAUMANN Ernst, . Principles of plant infection: A text of general plant pathology for biologists, agriculturists, foresters and plant breeders. New York: Hafner. 1950.