APA-referens (7:e uppl.)

Magpantay, C. Highly active absorbent for SO2 removal prepared from coal ash (Part 2). Philippine Engineering Journal.

Chicago-referens (17:e uppl.)

Magpantay, C.G. "Highly Active Absorbent for SO2 Removal Prepared from Coal Ash (Part 2)." Philippine Engineering Journal .

MLA-referens (9:e uppl.)

Magpantay, C.G. "Highly Active Absorbent for SO2 Removal Prepared from Coal Ash (Part 2)." Philippine Engineering Journal, .

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.