Brown, J. D. (2000). Using surveys in language programs. New York: Cambridge University Press.
Dyfyniad Arddull ChicagoBrown, James Dean. Using Surveys in Language Programs. New York: Cambridge University Press, 2000.
Dyfyniad MLABrown, James Dean. Using Surveys in Language Programs. New York: Cambridge University Press, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.