61A-49-021 - STS-61A - STS-61A earth observations

Chicago citation style
National Aeronautics and Space Administration. Lyndon B. Johnson Space Center. 2/17/1973. 61A-49-021 - STS-61A - STS-61A earth observations. 1981-04-12/2011-07-21. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/22809368. (Accessed December 12, 2018.)
APA citation style
National Aeronautics and Space Administration. Lyndon B. Johnson Space Center. 2/17/1973, (1981-04-12/2011-07-21) 61A-49-021 - STS-61A - STS-61A earth observations. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/22809368
MLA citation style
National Aeronautics and Space Administration. Lyndon B. Johnson Space Center. 2/17/1973. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/22809368>.
Note: These citations are programmatically generated and may be incomplete.