Valdman, A. (1966). Trends in language teaching. McGraw-Hill.
Chicago Style aipamenaValdman, Albert. Trends in Language Teaching. New York: McGraw-Hill, 1966.
MLA aipamenaValdman, Albert. Trends in Language Teaching. McGraw-Hill, 1966.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.