Παραπομπή σε μορφή APA (7η εκδ.)

Guzman, R., Gonzales, F. H., & Lacy, K. H. (1973). Production and marketing of sorghum in North and South Cotabato. Marketing Research Unit, National Food and Agriculture Council, Dept. of Agriculture and Natural Resources.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Guzman, R.D, F. H. Gonzales, και K. H. Lacy. Production and Marketing of Sorghum in North and South Cotabato. Quezon City: Marketing Research Unit, National Food and Agriculture Council, Dept. of Agriculture and Natural Resources, 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Guzman, R.D, et al. Production and Marketing of Sorghum in North and South Cotabato. Marketing Research Unit, National Food and Agriculture Council, Dept. of Agriculture and Natural Resources, 1973.