Johnson, P. (2009). Business Economics -II S.Y.B.Com 1ed (1.). Manan Prakashan.
Lua i Stíl Chicago (17ú heag.)Johnson, P.A. Business Economics -II S.Y.B.Com 1ed. 1. Mumbai: Manan Prakashan, 2009.
Lua MLA (9ú heag.)Johnson, P.A. Business Economics -II S.Y.B.Com 1ed. 1. Manan Prakashan, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.