Philippines. Environmental Management Bureau. (1989). Ecological profile of Batangas. The Bureau.
Cita Chicago (17th ed.)Philippines. Environmental Management Bureau. Ecological Profile of Batangas. [Quezon City]: The Bureau, 1989.
Cita MLA (9th ed.)Philippines. Environmental Management Bureau. Ecological Profile of Batangas. The Bureau, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.