Nem Singh, A. C., & Nem Singh, R. P. (2002). Reviewer for career service examinations: Professional & subprofessional levels. National Bookstore.
Chicago-referens (17:e uppl.)Nem Singh, Alfredo C., och Rosario P. Nem Singh. Reviewer for Career Service Examinations: Professional & Subprofessional Levels. Mandaluyong City: National Bookstore, 2002.
MLA-referens (9:e uppl.)Nem Singh, Alfredo C., och Rosario P. Nem Singh. Reviewer for Career Service Examinations: Professional & Subprofessional Levels. National Bookstore, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.