APA-viite

Sharma & Singh. (1999). Upkar's SSC combined preliminary examination. Upkar prakashan.

Chicago-tyylinen lähdeviittaus

Sharma ja Singh. Upkar's SSC Combined Preliminary Examination. Agra: Upkar prakashan, 1999.

MLA-viite

Sharma ja Singh. Upkar's SSC Combined Preliminary Examination. Upkar prakashan, 1999.