Cita APA (7th ed.)

Villadolid, D. V. (1936). The gourami: Its cultivation in the Philippines. Bureau of printing.

Cita Chicago (17th ed.)

Villadolid, Deogracias Villamarin. The Gourami: Its Cultivation in the Philippines. Manila: Bureau of printing, 1936.

Cita MLA (9th ed.)

Villadolid, Deogracias Villamarin. The Gourami: Its Cultivation in the Philippines. Bureau of printing, 1936.