Παραπομπή σε μορφή APA (7η εκδ.)

Edward Emerson Barnard, F. b. G. O. D. (2012). A PHOTOGRAPHIC ATLAS OF SELECTED REGIONS OF THE MILKY WAY (1.). Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Edward Emerson Barnard, Foreword by Gerald Orin Dobek. A PHOTOGRAPHIC ATLAS OF SELECTED REGIONS OF THE MILKY WAY. 1. Cambridge University Press, 2012.

Παραπομπή σε μορφή MLA (8th εκδ.)

Edward Emerson Barnard, Foreword by Gerald Orin Dobek. A PHOTOGRAPHIC ATLAS OF SELECTED REGIONS OF THE MILKY WAY. 1. Cambridge University Press, 2012.