Cita APA (7a ed.)

Philippines. Environmental Management Bureau. (1989). Ecological profile of Batangas. The Bureau.

Cita Chicago Style (17a ed.)

Philippines. Environmental Management Bureau. Ecological Profile of Batangas. [Quezon City]: The Bureau, 1989.

Cita MLA (9a ed.)

Philippines. Environmental Management Bureau. Ecological Profile of Batangas. The Bureau, 1989.