WIT. (2000). English grammar 1. PT. Ercontara Rajawali.
Cita Chicago (17th ed.)WIT. English Grammar 1. PT. Ercontara Rajawali, 2000.
Cita MLA (9th ed.)WIT. English Grammar 1. PT. Ercontara Rajawali, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.