Παραπομπή σε μορφή APA (7η εκδ.)

Villanueva, M. A. (2003). Without legislation, gov't has no choice but to enforce Clean Air Act. Philippine Star.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Villanueva, Marichu A. "Without Legislation, Gov't Has No Choice but to Enforce Clean Air Act." Philippine Star 2003.

Παραπομπή σε μορφή MLA (9th εκδ.)

Villanueva, Marichu A. "Without Legislation, Gov't Has No Choice but to Enforce Clean Air Act." Philippine Star, 2003.