Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.