APA (7th ed.) Citation

Manalac, S., Senador, A., & Escoto, A. D. Sulfonation of clean and contaminated polystyrene (Styrofoam). Philippine Engineering Journal.

Chicago Style (17th ed.) Citation

Manalac, S., A. Senador, and Angela D. Escoto. "Sulfonation of Clean and Contaminated Polystyrene (Styrofoam)." Philippine Engineering Journal .

MLA (9th ed.) Citation

Manalac, S., et al. "Sulfonation of Clean and Contaminated Polystyrene (Styrofoam)." Philippine Engineering Journal, .