Dyfyniad APA

Biber, D. (1999). Longman grammar of spoken and written English. New York: Longman.

Dyfyniad Arddull Chicago

Biber, Douglas. Longman Grammar of Spoken and Written English. New York: Longman, 1999.

Dyfyniad MLA

Biber, Douglas. Longman Grammar of Spoken and Written English. New York: Longman, 1999.

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