HAWKINS, P. J., Νέστορός, Ι. Ν., Hawkins, P. J., Νέστορος, Ι. Ν., & Νέστορος, Ι. Ν. (1997). Psychotherapy: New perspectives on theory, practice and research ; edited by Peter J. Hawkins [and] Joannis N. Nestoros. Athens: Ellinika Grammata.

HAWKINS, PETER J., Ιωάννης Ν Νέστορός, Peter J. Hawkins, Ιωάννης Ν. Νέστορος, and Ιωάννης Ν Νέστορος. Psychotherapy: New Perspectives On Theory, Practice and Research ; Edited By Peter J. Hawkins [and] Joannis N. Nestoros. Athens: Ellinika Grammata, 1997.

HAWKINS, PETER J., et al. Psychotherapy: New Perspectives On Theory, Practice and Research ; Edited By Peter J. Hawkins [and] Joannis N. Nestoros. Athens: Ellinika Grammata, 1997.