S131E008660 - STS-131 - STS-131 EVA 2 EMU Prep

Chicago citation style
National Aeronautics and Space Administration. Lyndon B. Johnson Space Center. 2/17/1973-. S131E008660 - STS-131 - STS-131 EVA 2 EMU Prep. 1981-04-12/2011-07-21. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/23573449. (Accessed June 20, 2018.)
APA citation style
National Aeronautics and Space Administration. Lyndon B. Johnson Space Center. 2/17/1973-, (1981-04-12/2011-07-21) S131E008660 - STS-131 - STS-131 EVA 2 EMU Prep. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/23573449
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/23573449>.
Note: These citations are programmatically generated and may be incomplete.