APA

Heald F. D., . (1933). Manual of Plant Diseases. New York: Mcgraw-Hill.

Chicago

Heald Frederick Deforest, . 1933. Manual of Plant Diseases. New York: Mcgraw-Hill.

Harvard

Heald F. D., . (1933). Manual of Plant Diseases. New York: Mcgraw-Hill.

MLA

Heald Frederick Deforest, . Manual of Plant Diseases. New York: Mcgraw-Hill. 1933.