Cita APA (7th ed.)

International Union of Geodesy and Geophysics. (1971). Syste`me geodesique de reference 1967, Geodetic reference system, 1967. Bureau central de l'Association, 19, rue Aubert.

Cita Chicago (17th ed.)

International Union of Geodesy and Geophysics. Syste`me Geodesique De Reference 1967, Geodetic Reference System, 1967. Paris (9e): Bureau central de l'Association, 19, rue Aubert, 1971.

Cita MLA (8th ed.)

International Union of Geodesy and Geophysics. Syste`me Geodesique De Reference 1967, Geodetic Reference System, 1967. Bureau central de l'Association, 19, rue Aubert, 1971.