APA (7th ed.) Citation

Hillenberg, J., & Collins, F. L. (1983). The importance of home practice for progressive relaxation training. Behaviour research and therapy, 21(6), 633-642. https://doi.org/10.1016/0005-7967(83)90081-5

Chicago Style (17th ed.) Citation

Hillenberg, J.Bruce, and Frank L. Collins. "The Importance of Home Practice for Progressive Relaxation Training." Behaviour Research and Therapy 21, no. 6 (1983): 633-642. https://doi.org/10.1016/0005-7967(83)90081-5.

MLA (9th ed.) Citation

Hillenberg, J.Bruce, and Frank L. Collins. "The Importance of Home Practice for Progressive Relaxation Training." Behaviour Research and Therapy, vol. 21, no. 6, 1983, pp. 633-642, https://doi.org/10.1016/0005-7967(83)90081-5.