Springer, 18 World Scientific,17 McGraw-Hill, 9 Research Publishing, 8 Prentice Hall, 8 ISEAS, 6 WILEY BLACKWELL, 5 Springer Nature,5 Corwin, 5 Wiley, 4 John Wiley & Sons , 4 Periplus, 3 Ashgate, 3 Pearson, 3 Page One, 3 Longman, 3 Corwin Press, 3 Wiley-Blackwell, 2 Pan Stanford,2 Mc Graw Hill, 2