एपीए उद्धरण

Doughty, C. (1999). Focus on form in classroom second language acquisition. Cambridge, U.K: Cambridge Univ. Press.

शिकागो स्टाइल उद्धरण

Doughty, Catherine. Focus On Form in Classroom Second Language Acquisition. Cambridge, U.K: Cambridge Univ. Press, 1999.

एमएलए उद्धरण

Doughty, Catherine. Focus On Form in Classroom Second Language Acquisition. Cambridge, U.K: Cambridge Univ. Press, 1999.