Dyfyniad APA

Langan, J. (2005). College writing skills, with readings (6th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Langan, John. College Writing Skills, with Readings. 6th ed. Boston: McGraw-Hill, 2005.

Dyfyniad MLA

Langan, John. College Writing Skills, with Readings. 6th ed. McGraw-Hill, 2005.

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