The NASA scientific and technical information system :
its scope and coverage.
APA Citation
United States. National Aeronautics and Space Administration. Scientific and Technical Information Division. (1978). The NASA scientific and technical information system: its scope and coverage. Washington: National Aeronautics and Space Administration.
MLA Citation
United States. National Aeronautics and Space Administration. Scientific and Technical Information Division. The NASA Scientific And Technical Information System: Its Scope And Coverage. Washington: National Aeronautics and Space Administration, 1978.
Warning: These citations may not always be complete (especially for serials).