Cita APA (7a ed.)

Philippine Long Distance Telephone Company & Directories Philippines Corporation. (2002). Quezon City business directory. PLDT ; DPC.

Cita Chicago Style (17a ed.)

Philippine Long Distance Telephone Company y Directories Philippines Corporation. Quezon City Business Directory. Makati City: PLDT ; DPC, 2002.

Cita MLA (9a ed.)

Philippine Long Distance Telephone Company y Directories Philippines Corporation. Quezon City Business Directory. PLDT ; DPC, 2002.