Dyfyniad APA

Abaya, A. P., & Asuncion, T. B. (1985). Cost and returns of sweet potato in selected provinces: Philippines, 1983. Bureau of Agricultural Economics.

Dyfyniad Arddull Chicago

Abaya, Aurelia P., and Tirso B. Asuncion. Cost and Returns of Sweet Potato in Selected Provinces: Philippines, 1983. Quezon City: Bureau of Agricultural Economics, 1985.

Dyfyniad MLA

Abaya, Aurelia P., and Tirso B. Asuncion. Cost and Returns of Sweet Potato in Selected Provinces: Philippines, 1983. Bureau of Agricultural Economics, 1985.

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