By John E. Janke Dean W. Wichern

Published by Pearsong Prentic Hall, 2009

By Hough W Babb

Published by Branes and noble, 1963

By John A Shuhin

Published by Branes and noble, 1962

By John A Shubin

Published by Branes and Noble, 1962

By Nisar ud Din

Published by National Publishing Corp., 1967

By William G. Zikmund

Published by Cengage Learning Indeia Private Limited, 2011

By Sir Ivor Jennings

Published on 1965

By Dogar Brothers

Published by Dogar Publishers, 0

By Jarry J Goldstein and others

Published by Prentice Hall International Inc., 1990