Dyfyniad APA

Dickson, J. G. (1947). Diseases of field crops (2.). Mc Graw- Hill Book Company Inc.

Dyfyniad Arddull Chicago

Dickson, James G. Diseases of Field Crops. 2. Newyork: Mc Graw- Hill Book Company Inc, 1947.

Dyfyniad MLA

Dickson, James G. Diseases of Field Crops. 2. Mc Graw- Hill Book Company Inc, 1947.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.