Cita APA (7a ed.)

National Book Development Council of Singapore. (1981). First national readership survey. National Book Development Council of Singapore.

Cita Chicago Style (17a ed.)

National Book Development Council of Singapore. First National Readership Survey. [Singapore]: National Book Development Council of Singapore, 1981.

Cita MLA (8a ed.)

National Book Development Council of Singapore. First National Readership Survey. National Book Development Council of Singapore, 1981.