APA način citiranja (7. izdanje)
NTPC. (2011). Electrical engineering executive trainees recruitment exam study guide. G.K.Publications.
Čikaški stil citiranja (17. izdanje)
NTPC. Electrical Engineering Executive Trainees Recruitment Exam Study Guide. Noida: G.K.Publications, 2011.
MLA način citiranja (9. izdanje)
NTPC. Electrical Engineering Executive Trainees Recruitment Exam Study Guide. G.K.Publications, 2011.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.