Eichhorn, H. (1974). Astronomy of star positions: : a critical investigation of star catalogues, the methods of their construction, and their purpose. New York: Ungar.
Παραπομπή Chicago StyleEichhorn, Heinrich. Astronomy of Star Positions: : A Critical Investigation of Star Catalogues, the Methods of Their Construction, and Their Purpose. New York: Ungar, 1974.
Παραπομπή MLAEichhorn, Heinrich. Astronomy of Star Positions: : A Critical Investigation of Star Catalogues, the Methods of Their Construction, and Their Purpose. New York: Ungar, 1974.
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