Citazione APA

Hammonds, C., Woods, R. H., & Gregory, R. W. (1938). Today's agriculture. J.B. Lippincott company.

Stile di citazione Chicago

Hammonds, Carsie, Ralph H. Woods, e R. W. Gregory. Today's Agriculture. Chicago, Philadelphia [etc.]: J.B. Lippincott company, 1938.

Citazione MLA

Hammonds, Carsie, et al. Today's Agriculture. J.B. Lippincott company, 1938.