APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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