Chan, T. W. (2013). Tailgating/Piggybacking detection security system.
Chicago Style (17th ed.) CitationChan, Tjun Wern. Tailgating/Piggybacking Detection Security System. 2013.
MLA (9th ed.) CitationChan, Tjun Wern. Tailgating/Piggybacking Detection Security System. 2013.
Warning: These citations may not always be 100% accurate.