Verma, R. (1991). Supervisory management. Deep & Deep.
Lua i Stíl Chicago (17ú heag.)Verma, R. Supervisory Management. New Delhi: Deep & Deep, 1991.
Lua MLA (9ú heag.)Verma, R. Supervisory Management. Deep & Deep, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.