Παραπομπή APA

Biber Douglas, Conrad Susan, & Leech Geoffrey. (2012). Student grammar of spoken and written english. H.: Nhà xuất bản Văn hóa Thông tin.

Παραπομπή Chicago Style

Biber Douglas, Conrad Susan, και Leech Geoffrey. Student Grammar of Spoken and Written English. H.: Nhà xuất bản Văn hóa Thông tin, 2012.

Παραπομπή MLA

Biber Douglas, Conrad Susan, και Leech Geoffrey. Student Grammar of Spoken and Written English. H.: Nhà xuất bản Văn hóa Thông tin, 2012.

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