Παραπομπή σε μορφή APA (7η εκδ.)

(1966). Decision making and the elementary school principal / Department of Elementary School Principals, National Education Association ; [prepared for the Department by: William L. Pharis, Jack D. Roberts, Richard Wynn].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Decision Making and the Elementary School Principal / Department of Elementary School Principals, National Education Association ; [prepared for the Department by: William L. Pharis, Jack D. Roberts, Richard Wynn]. 1966.

Παραπομπή σε μορφή MLA (9th εκδ.)

Decision Making and the Elementary School Principal / Department of Elementary School Principals, National Education Association ; [prepared for the Department by: William L. Pharis, Jack D. Roberts, Richard Wynn]. 1966.