(1985). Globe General Services and Security Agency and GGC Marketing Services Unlimited. GGSSA.
Chicago-viite (17. p.)Globe General Services and Security Agency and GGC Marketing Services Unlimited. Pasay City: GGSSA, 1985.
MLA-viite (9. p.)Globe General Services and Security Agency and GGC Marketing Services Unlimited. GGSSA, 1985.
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