Cita APA (7th ed.)

Philippines. National Computer Center & Information Technology Resources Research Unit. (1990). Directory of government-developed software. Information Technology Resources Research Unit, National Computer Center.

Cita Chicago (17th ed.)

Philippines. National Computer Center i Information Technology Resources Research Unit. Directory of Government-developed Software. Quezon City: Information Technology Resources Research Unit, National Computer Center, 1990.

Cita MLA (9th ed.)

Philippines. National Computer Center i Information Technology Resources Research Unit. Directory of Government-developed Software. Information Technology Resources Research Unit, National Computer Center, 1990.