APA (7th ed.) Citation

Mañalac, S., Senador, A. J., & Escoto, A. D. (2008). Sulfonation of clean and contaminated polystyrene (styrofoam). Philippine Engineering Journal.

Chicago Style (17th ed.) Citation

Mañalac, S., A. Jr Senador, and Angela D. Escoto. "Sulfonation of Clean and Contaminated Polystyrene (styrofoam)." Philippine Engineering Journal 2008.

MLA (9th ed.) Citation

Mañalac, S., et al. "Sulfonation of Clean and Contaminated Polystyrene (styrofoam)." Philippine Engineering Journal, 2008.