Pergamon Press,9 Longman,7 Prentice Hall,6 Cambridge University Press,5 Gower,4 Gower Publishing Company Limited,4 Saxon House,2 Penguin Books,2 Gower Publishing Company Publishing,2 Modern English Publications,2 Pearson Education Limited,2 John Wiley & Sons,2 Penguin Books Inc,1 The Open University Press,1 John Wiley & Sons Ltd,1 George Allen & Unwin,1 Belknap,1 John Wiley,1 Mc Graw Hill,1 Pengiun Books,1