Social Conflict : Escalation, Talemate, and Settlement = Teori Konflik Sosial

著者: Dean G. Pruitt, Helly P. Soetjipto dan Sri Mul
出版事項 2011

Theory and Pracktise of Counselling and Therapy, Fourth Edition = Teori dan Praktik Konseling dan Terapi

著者: Richard Nelson-Jones, Helly P. Soetjipto dan Sri Mul
出版事項 2011