APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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