Παραπομπή APA

Langan, J. (2003). Ten Skill You Really Need to Succeed in College. McGraw - HillCompanies, Inc.

Παραπομπή Chicago Style

Langan, John. Ten Skill You Really Need to Succeed in College. McGraw - HillCompanies, Inc, 2003.

Παραπομπή MLA

Langan, John. Ten Skill You Really Need to Succeed in College. McGraw - HillCompanies, Inc, 2003.

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