Gaya APA

Stakman, E., GEorge, I, H, J. (1957). Principles of plant pathology . New York: New York: The Ronald; 1957.

Gaya MLA

Stakman, E.C.., GEorge, I., Harrar,, J.. "Principles of plant pathology". New York: New York: The Ronald; 1957, 1957. Text.