Παραπομπή σε μορφή APA (7η εκδ.)

Ryan, R. (2008). Leadership development: A guide for HR and training professionals. Butterworth-Heinemann.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ryan, Rosemary. Leadership Development: A Guide for HR and Training Professionals. Amsterdam: Butterworth-Heinemann, 2008.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ryan, Rosemary. Leadership Development: A Guide for HR and Training Professionals. Butterworth-Heinemann, 2008.