APA (7 वां संस्करण) प्रशस्ति पत्र

Singapore. Dept. of Statistics & Khoo, C. K. (1980). Census of population, 1980, Singapore: Release. Dept. of Statistics.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Singapore. Dept. of Statistics और Chian Kim Khoo. Census of Population, 1980, Singapore: Release. Singapore: Dept. of Statistics, 1980.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Singapore. Dept. of Statistics और Chian Kim Khoo. Census of Population, 1980, Singapore: Release. Dept. of Statistics, 1980.