National Book Development Council of Singapore. (1981). First national readership survey. National Book Development Council of Singapore.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Book Development Council of Singapore. First National Readership Survey. [Singapore]: National Book Development Council of Singapore, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNational Book Development Council of Singapore. First National Readership Survey. National Book Development Council of Singapore, 1981.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.