APA

Westcott C., . (1971). Plant disease handbook. New York, New York, United States: Van Nostrand Reinhold Company.

Chicago

Westcott Cynthia, . 1971. Plant disease handbook. New York, New York, United States: Van Nostrand Reinhold Company.

Harvard

Westcott C., . (1971). Plant disease handbook. New York, New York, United States: Van Nostrand Reinhold Company.

MLA

Westcott Cynthia, . Plant disease handbook. New York, New York, United States: Van Nostrand Reinhold Company. 1971.