APA

Hsiung R. C., . (2002). E-therapy. New York: W.W. Norton & Company.

Chicago

Hsiung Robert C, . 2002. E-therapy. New York: W.W. Norton & Company.

Harvard

Hsiung R. C., . (2002). E-therapy. New York: W.W. Norton & Company.

MLA

Hsiung Robert C, . E-therapy. New York: W.W. Norton & Company. 2002.