Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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