Cheong, Q. W. (1971). Sampling system for the "SISIR" certification marking scheme.
Chicago Style (17th ed.) CitationCheong, Quee Wah. Sampling System for the "SISIR" Certification Marking Scheme. [Singapore, 1971.
MLA (8th ed.) CitationCheong, Quee Wah. Sampling System for the "SISIR" Certification Marking Scheme. 1971.
Warning: These citations may not always be 100% accurate.