(1985). Globe General Services and Security Agency and GGC Marketing Services Unlimited. GGSSA.
芝加哥风格引文Globe General Services and Security Agency and GGC Marketing Services Unlimited. Pasay City: GGSSA, 1985.
MLA引文Globe General Services and Security Agency and GGC Marketing Services Unlimited. GGSSA, 1985.
警告：这些引文格式不一定是100％准确.