Cita APA (7a ed.)

International Astronomical Union Colloquium, International Astronomical Union, Kołaczek, B., & Weiffenbach, G. (1975). On reference coordinate systems for Earth dynamics: Colloquium nr. 26, held in Torun, Poland, 26-31 August 1974. [s.n.].

Cita Chicago Style (17a ed.)

International Astronomical Union Colloquium, International Astronomical Union, Barbara Kołaczek, y George Weiffenbach. On Reference Coordinate Systems for Earth Dynamics: Colloquium Nr. 26, Held in Torun, Poland, 26-31 August 1974. Warsaw: [s.n.], 1975.

Cita MLA (9a ed.)

International Astronomical Union Colloquium, et al. On Reference Coordinate Systems for Earth Dynamics: Colloquium Nr. 26, Held in Torun, Poland, 26-31 August 1974. [s.n.], 1975.