By Alfred W. Stonier and Dougles C Hagus

Published by Longman Group, 1982

By Dolan/Vogt

Published by Holt, Ranehart and Winston, 1984

By Damodar N. Gujarati, Dswan C Porter & Sangeetha G

Published by Tata McGraw Hill Education Private Limited, 2010

By Malik Muhammad Zahir Faridi & Imran Sharif Ch.

Published by Abdullah Brothers, 0

By Douglas A. Lind, William G. Marchal & Others

Published by McGraw Hill Education(India) Pvt. Ltd., 2013

By John E. Janke Dean W. Wichern

Published by Pearsong Prentic Hall, 2009

By Nisar ud Din

Published by National Publishing Corp., 1967

By William G. Zikmund

Published by Cengage Learning Indeia Private Limited, 2011

By Hafiz A Pasha and others

Published by Oxford University, 1987