Dyfyniad APA

Eko, E. E. (1999). Effective writing. Heinemann Educational Books.

Dyfyniad Arddull Chicago

Eko, Ebele E. Effective Writing. Heinemann Educational Books, 1999.

Dyfyniad MLA

Eko, Ebele E. Effective Writing. Heinemann Educational Books, 1999.

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