Cita APA (7th ed.)

Philippine Long Distance Telephone Company, Inc. Iloilo telephone directory. s.n.].

Cita Chicago (17th ed.)

Philippine Long Distance Telephone Company, Inc. Iloilo Telephone Directory. [Iloilo City: s.n.].

Cita MLA (9th ed.)

Philippine Long Distance Telephone Company, Inc. Iloilo Telephone Directory. s.n.].