SINGH P N. (2004). TRAINING FOR MANAGEMENT DEVELOPMENT (8TH.). P N SINGH CENTRE FOR HRD.
Lua i Stíl Chicago (17ú heag.)SINGH P N. TRAINING FOR MANAGEMENT DEVELOPMENT. 8TH. MUMBAI: P N SINGH CENTRE FOR HRD, 2004.
Lua MLA (9ú heag.)SINGH P N. TRAINING FOR MANAGEMENT DEVELOPMENT. 8TH. P N SINGH CENTRE FOR HRD, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.