Ellis, D. B., & David B.Ellis. (1991). Becoming a master student. U. S. A: College Survival,Inc.
Chicago Style CitationEllis, David B., i David B.Ellis. Becoming a Master Student. U. S. A: College Survival,Inc, 1991.
Cita MLAEllis, David B., i David B.Ellis. Becoming a Master Student. U. S. A: College Survival,Inc, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.