Deismireacht APA

Langan, J., & John Langan. (1985). English skills. New York: McGraw-Hill.

Trích dẫn kiểu Chicago

Langan, John, và John Langan. English Skills. New York: McGraw-Hill, 1985.

Deismireacht MLA

Langan, John, và John Langan. English Skills. New York: McGraw-Hill, 1985.

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