Παραπομπή σε μορφή APA (7η εκδ.)

Shields, J. M. (1987). An analysis of selected aspects of leadership skills among selected principals of Catholic secondary schools in the Archdiocese of Chicago.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Shields, John Michael. An Analysis of Selected Aspects of Leadership Skills Among Selected Principals of Catholic Secondary Schools in the Archdiocese of Chicago. 1987.

Παραπομπή σε μορφή MLA (8th εκδ.)

Shields, John Michael. An Analysis of Selected Aspects of Leadership Skills Among Selected Principals of Catholic Secondary Schools in the Archdiocese of Chicago. 1987.