Cita APA (7th ed.)

Batangas Development Foundation. (1971). An economic survey of the province of Batangas. s.n.].

Cita Chicago (17th ed.)

Batangas Development Foundation. An Economic Survey of the Province of Batangas. [Manila: s.n.], 1971.

Cita MLA (9th ed.)

Batangas Development Foundation. An Economic Survey of the Province of Batangas. s.n.], 1971.