Interim definitive orbit for the satellite 1959 Alpha, Vanguard-II /
Theory and Analysis staff, Goddard Space Flight Center.

APA Citation

Goddard Space Flight Center. (1960). Interim definitive orbit for the satellite 1959 Alpha, Vanguard-II. Washington: National Aeronautics and Space Administration.

MLA Citation

Goddard Space Flight Center. Interim Definitive Orbit for the Satellite 1959 Alpha, Vanguard-II. Washington: National Aeronautics and Space Administration, 1960.

Warning: These citations may not always be complete (especially for serials).