Farahmita, F., D. Y. Puji Sugiharto, and A. Awalya. “The Effectiveness of Classical Guidance With Reinforcement and Cooperative Play Techniques to Promote Prosocial Behavior”. Jurnal Bimbingan Konseling, Vol. 10, no. 2, Aug. 2021, pp. 106-11, doi:10.15294/jubk.v10i2.48024.