APA引文

Singapore. National Statistical Commission. (1973). Singapore standard industrial classification, 1973. National Statistical Commission.

Chicago Style (17th ed.) Citation

Singapore. National Statistical Commission. Singapore Standard Industrial Classification, 1973. Singapore: National Statistical Commission, 1973.

MLA引文

Singapore. National Statistical Commission. Singapore Standard Industrial Classification, 1973. National Statistical Commission, 1973.

警告：这些引文格式不一定是100％准确.