Cita APA (7th ed.)

Peralta, G. L., Ballesteros, F. C. J., & Cepeda, M. L. (1992). Immobilization techniques for toxic sludge. Philippine Engineering Journal.

Cita Chicago (17th ed.)

Peralta, Genandrialine L., Feliciano C. Jr Ballesteros, i Marivie L. Cepeda. "Immobilization Techniques for Toxic Sludge." Philippine Engineering Journal 1992.

Cita MLA (9th ed.)

Peralta, Genandrialine L., et al. "Immobilization Techniques for Toxic Sludge." Philippine Engineering Journal, 1992.