Ellis,David B. (1991). Becoming a master student (ed.6th.). Houghton Mifflin.
Copiat
No s'ha pogut copiar
Cita Chicago (17th ed.)
Ellis,David B. Becoming a Master Student. ed.6th. Rapid City: Houghton Mifflin, 1991.
Copiat
No s'ha pogut copiar
Cita MLA (9th ed.)
Ellis,David B. Becoming a Master Student. ed.6th. Houghton Mifflin, 1991.
Copiat
No s'ha pogut copiar
Atenció: Aquestes cites poden no estar 100% correctes.