APA (7th ed.) Citation

Tria, G. E., Limpingco, D. A., & Jao, L. V. (1998). Psychology of learning. Ken.

Chicago Style (17th ed.) Citation

Tria, Geraldine E., Delia A. Limpingco, and Loreto V. Jao. Psychology of Learning. Quezon City: Ken, 1998.

MLA (9th ed.) Citation

Tria, Geraldine E., et al. Psychology of Learning. Ken, 1998.