Cita APA (7a ed.)

Zeiss, C. (1970). Astro 70: : Astronomische Erganzungsgerate = Accesories for astronomical instruments. Carl Zeiss.

Cita Chicago Style (17a ed.)

Zeiss, Carl. Astro 70: : Astronomische Erganzungsgerate = Accesories for Astronomical Instruments. Jena: Carl Zeiss, 1970.

Cita MLA (9a ed.)

Zeiss, Carl. Astro 70: : Astronomische Erganzungsgerate = Accesories for Astronomical Instruments. Carl Zeiss, 1970.