Gaya APA

Fricke, W., Lederle, T. (1975). Apparent places of fundamental stars (1975). : Heidelberg : Astronomisches Rechen-Institut,.

Gaya MLA

Fricke, W., Lederle, T. "Apparent places of fundamental stars". 1975 : Heidelberg : Astronomisches Rechen-Institut,, 1975. Text.