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