APA (7th ed.) Citation

Piper, W. E., Ogrodniczuk, J. S., Joyce, A. S., & Weideman, R. (2011). Short-term group therapies for complicated grief: Two research-based models (First edition.). American Psychological Association.

Chicago Style (17th ed.) Citation

Piper, William E., John S. Ogrodniczuk, Anthony S. Joyce, and René Weideman. Short-term Group Therapies for Complicated Grief: Two Research-based Models. First edition. Washington, DC: American Psychological Association, 2011.

MLA (9th ed.) Citation

Piper, William E., et al. Short-term Group Therapies for Complicated Grief: Two Research-based Models. First edition. American Psychological Association, 2011.