Gaya APA

Williams, J, M, G. (1992). The psychological treatment of depression : a guide to the theory and practice of cognitive behaviour therapy / J. Mark G. Williams (2nd ed.). London: Routledge.

Gaya MLA

Williams, J., Mark, G.. "The psychological treatment of depression : a guide to the theory and practice of cognitive behaviour therapy / J. Mark G. Williams". 2nd ed. London: Routledge, 1992. Buku.