Ellen, G., J., Robin, C.(1997).The nice factor book : are you too nice for your own good / Jo Ellen Grzyb, Robin Chandler .London:Simon n Schuster.
Gaya MLA
Grzyb, Jo, Ellen., Chandler, Robin."The nice factor book : are you too nice for your own good / Jo Ellen Grzyb, Robin Chandler".London:Simon n Schuster,1997.Textbook.