Cita APA (7th ed.)

Cortes, L. P., Basa, E. Y., Estrera, J. A., Galvante, W. P., Rodriguez, V. L., Banta, S. J., & Acacio, R. C. (1983). Earth science: The Philippines in focus. Institute for Science and Mathematics Education Development, University of the Philippines.

Cita Chicago (17th ed.)

Cortes, Leticia P., Erlinda Yolo Basa, Josefina A. Estrera, Wulfilda P. Galvante, Violeta L. Rodriguez, Stephen J. Banta, i Rogelio C. Acacio. Earth Science: The Philippines in Focus. Quezon City: Institute for Science and Mathematics Education Development, University of the Philippines, 1983.

Cita MLA (9th ed.)

Cortes, Leticia P., et al. Earth Science: The Philippines in Focus. Institute for Science and Mathematics Education Development, University of the Philippines, 1983.