Walker, J. C. (1957). Plant pathology (2nd ed.). McGraw-Hill Book Co., Inc.
Chicago Style aipamenaWalker, John Charles. Plant Pathology. 2nd ed. New York: McGraw-Hill Book Co., Inc, 1957.
MLA aipamenaWalker, John Charles. Plant Pathology. 2nd ed. McGraw-Hill Book Co., Inc, 1957.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.