Mahal Kong Pilipinas Foundation. (1987). Philippine company profiles (1987 ed.). Mahal Kong Filipinas Foundation.
Cita Chicago (17th ed.)Mahal Kong Pilipinas Foundation. Philippine Company Profiles. 1987 ed. Ermita, Manila: Mahal Kong Filipinas Foundation, 1987.
Cita MLA (9th ed.)Mahal Kong Pilipinas Foundation. Philippine Company Profiles. 1987 ed. Mahal Kong Filipinas Foundation, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.