APA (7th ed.) Citation

Gaerlan, J., Limpengco, D., & Tria, G. (1998). Principles of mental hygiene. Ken.

Chicago Style (17th ed.) Citation

Gaerlan, Josefina, Delia Limpengco, and Geraldine Tria. Principles of Mental Hygiene. Quezon City: Ken, 1998.

MLA (9th ed.) Citation

Gaerlan, Josefina, et al. Principles of Mental Hygiene. Ken, 1998.