Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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