APA استشهاد

Gururaj, H., & Krishna, K. (1998). Science of field crop production. Oxford I B H publishing company.

استشهاد بنمط شيكاغو

Gururaj, Hunsigi, و K.R Krishna. Science of Field Crop Production. New Delhi: Oxford I B H publishing company, 1998.

MLA استشهاد

Gururaj, Hunsigi, و K.R Krishna. Science of Field Crop Production. Oxford I B H publishing company, 1998.