Gaya APA

Grzyb, J, E., Chandler, R. (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.