1) Text book of 11th Std Organisation of Commerce and Management by Michael Vaz (MANAN PRAKASHAN)
2) http://www.yourarticlelibrary.com/international-trade/international-trade-features-advantages-and-disadvantages-of-international-trade/26009
3) http://kalyan-city.blogspot.in/2011/03/what-is-foreign-trade-types-and.html
4) https://www.the-reseller-network.com/content/84/types-of-wholesalers/
5) http://www.yourarticlelibrary.com/wholesalers/top-8-essential-functions-of-a-wholesaler-business-management/25928
6) http://www.businessstudynotes.com/others/introduction-to-business/discuss-wholesalers-and-the-types-of-wholesalers/