Embuscado, C. K. (1990). An information systems study on the clearing of PBX trouble complaints by the Makati repair test dispatch department of the Philippine Long Distance Telephone Company. College of Engineering.
Lua i Stíl Chicago (17ú heag.)Embuscado, Cesar K. An Information Systems Study on the Clearing of PBX Trouble Complaints by the Makati Repair Test Dispatch Department of the Philippine Long Distance Telephone Company. Diliman, Quezon City: College of Engineering, 1990.
Lua MLA (9ú heag.)Embuscado, Cesar K. An Information Systems Study on the Clearing of PBX Trouble Complaints by the Makati Repair Test Dispatch Department of the Philippine Long Distance Telephone Company. College of Engineering, 1990.
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