APA ציטוט

George J & Stakma E C, H. (1957). Principles of plant pathology. Ronald press co.

Chicago Edition Citation

George J and Harrar Stakma E C. Principles of Plant Pathology. Newyork: Ronald press co, 1957.

ציטוט MLA

George J and Harrar Stakma E C. Principles of Plant Pathology. Ronald press co, 1957.