DR RAM, U. /. H. COLLINS EXPLORING GRAMMAR- 4. COLLINS.
Cita Chicago (17th ed.)DR RAM, USHA / HANDS. COLLINS EXPLORING GRAMMAR- 4. COLLINS.
Cita MLA (9th ed.)DR RAM, USHA / HANDS. COLLINS EXPLORING GRAMMAR- 4. COLLINS.
Atenció: Aquestes cites poden no estar 100% correctes.