Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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