Gould, B. A. (1897). Cordoba photographs: Photographic observations of star-clusters. The Nichols Press.
Citazione stile Chigago Style (17a edizione)Gould, Benjamin Apthorp. Cordoba Photographs: Photographic Observations of Star-clusters. Lynn: The Nichols Press, 1897.
Citatione MLA (9a ed.)Gould, Benjamin Apthorp. Cordoba Photographs: Photographic Observations of Star-clusters. The Nichols Press, 1897.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.