Citazione Stile APA (7a Edizione)

Guzman, R. (1975). Sweet potato marketing, Part V: Central Visayas. Special Studies Division, Dept. of Agriculture.

Citazione stile Chigago Style (17a edizione)

Guzman, R.D. Sweet Potato Marketing, Part V: Central Visayas. Quezon City: Special Studies Division, Dept. of Agriculture, 1975.

Citatione MLA (9a ed.)

Guzman, R.D. Sweet Potato Marketing, Part V: Central Visayas. Special Studies Division, Dept. of Agriculture, 1975.