Mercurio, P. G. (1986). O.P.M: An editorial campaign for the advancement of original pilipino music.
Lua i Stíl Chicago (17ú heag.)Mercurio, Policarpo G. O.P.M: An Editorial Campaign for the Advancement of Original Pilipino Music. 1986.
Lua MLA (9ú heag.)Mercurio, Policarpo G. O.P.M: An Editorial Campaign for the Advancement of Original Pilipino Music. 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.