APA (7th ed.) Citation

Alvira, T., Melendo, T., Claven, L., Supan, L., & Guzman, M. (1991). Metaphysics. Sinag-tala Publishers, Inc.

Chicago Style (17th ed.) Citation

Alvira, Tomas, Tomas Melendo, Luis Claven, Luis Supan, and M. Guzman. Metaphysics. Manila: Sinag-tala Publishers, Inc, 1991.

MLA (9th ed.) Citation

Alvira, Tomas, et al. Metaphysics. Sinag-tala Publishers, Inc, 1991.