Crawford, J. (1991). Bilingual education: History, politics, theory, and practice (2nd ed.). Bilingual Educational Services.
Dyfyniad Arddull ChicagoCrawford, James. Bilingual Education: History, Politics, Theory, and Practice. 2nd ed. Los Angeles: Bilingual Educational Services, 1991.
Dyfyniad MLACrawford, James. Bilingual Education: History, Politics, Theory, and Practice. 2nd ed. Bilingual Educational Services, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.