Dyfyniad APA

(1981). Current topics in sarvey adapking/easted. Academic Press.

Dyfyniad Arddull Chicago

Current Topics in Sarvey Adapking/easted. New York: Academic Press, 1981.

Dyfyniad MLA

Current Topics in Sarvey Adapking/easted. Academic Press, 1981.

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