Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.