Routledge,7 Oxford University Press,6 Cambridge University Press,5 McGraw-Hill,5 Core Knowledge Foundation,3 Springer New York Dordrecht Heidelberg,3 Dover Publications,2 Penguin Group,2 Basic Books,2 Scribner,2 Continuum International Publishing Group,2 Mc Graw Hill,2 Bantam Books,2 Simon & Schuster,2 Learning Express,2 David Aretha,1 Little, Brown and Company,1 Springer Wien New York,1 United States of America by Information Science Reference (an imprint of IGI Global),1 Allworth Press,1