APA (7th ed.) Citation

United States. Office of Space Science. (1999). Small explorers (SMEX) and missions of opportunity: Announcement of opportunity soliciting proposals for basic research in space science. Office of Space Science, National Aeronautics and Space Administration.

Chicago Style (17th ed.) Citation

United States. Office of Space Science. Small Explorers (SMEX) and Missions of Opportunity: Announcement of Opportunity Soliciting Proposals for Basic Research in Space Science. Washington, DC: Office of Space Science, National Aeronautics and Space Administration, 1999.

MLA (9th ed.) Citation

United States. Office of Space Science. Small Explorers (SMEX) and Missions of Opportunity: Announcement of Opportunity Soliciting Proposals for Basic Research in Space Science. Office of Space Science, National Aeronautics and Space Administration, 1999.