Filipinas Foundation, Inc. (1977). Batangas: Its image and prospects :an in-depth study on the province of Batangas. The Foundation.
Chicago-viite (17. p.)Filipinas Foundation, Inc. Batangas: Its Image and Prospects :an In-depth Study on the Province of Batangas. Manila: The Foundation, 1977.
MLA-viite (9. p.)Filipinas Foundation, Inc. Batangas: Its Image and Prospects :an In-depth Study on the Province of Batangas. The Foundation, 1977.
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