Singh, Y. (1990). Encyclopaedic dictionary of commerce: Vol I. Akashdeep.
Lua i Stíl Chicago (17ú heag.)Singh, Y. Encyclopaedic Dictionary of Commerce: Vol I. Delhi: Akashdeep, 1990.
Lua MLA (9ú heag.)Singh, Y. Encyclopaedic Dictionary of Commerce: Vol I. Akashdeep, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.