Παραπομπή σε μορφή APA (7η εκδ.)

ebrary, Inc, & Powell, J. L. (2012). Understanding the voluntary sector: Critical success factors : a case study. Nova Science Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ebrary, Inc, και Jason L. Powell. Understanding the Voluntary Sector: Critical Success Factors : A Case Study. New York: Nova Science Publishers, 2012.

Παραπομπή σε μορφή MLA (9th εκδ.)

ebrary, Inc, και Jason L. Powell. Understanding the Voluntary Sector: Critical Success Factors : A Case Study. Nova Science Publishers, 2012.