Dyfyniad APA

Biber, D. (2002). Longman student grammar of spoken and written English. Longman.

Dyfyniad Arddull Chicago

Biber, Douglas. Longman Student Grammar of Spoken and Written English. Harlow: Longman, 2002.

Dyfyniad MLA

Biber, Douglas. Longman Student Grammar of Spoken and Written English. Longman, 2002.

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