Cita APA (7th ed.)

Tanyag, E. G., & Affungol, A. P. (1986). Costs and returns in black pepper production, Batangas, 1985. Bureau of Agricultural Economics.

Cita Chicago (17th ed.)

Tanyag, Emeteria G., i Amparo P. Affungol. Costs and Returns in Black Pepper Production, Batangas, 1985. Quezon City: Bureau of Agricultural Economics, 1986.

Cita MLA (9th ed.)

Tanyag, Emeteria G., i Amparo P. Affungol. Costs and Returns in Black Pepper Production, Batangas, 1985. Bureau of Agricultural Economics, 1986.