NASA DFRC Mate-Demate Device (MDD) view from ground looking west and up at Shuttle Access Platforms (SAPs)- 'A' platform, 'XY' motor platform, and front and rear main hoist hooks and blocks also visible.

Chicago citation style
National Aeronautics and Space Administration. Dryden Flight Research Center. 3/1/1994. NASA DFRC Mate-Demate Device (MDD) view from ground looking west and up at Shuttle Access Platforms (SAPs)- 'A' platform, 'XY' motor platform, and front and rear main hoist hooks and blocks also visible.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/12042863. (Accessed September 20, 2018.)
APA citation style
National Aeronautics and Space Administration. Dryden Flight Research Center. 3/1/1994, NASA DFRC Mate-Demate Device (MDD) view from ground looking west and up at Shuttle Access Platforms (SAPs)- 'A' platform, 'XY' motor platform, and front and rear main hoist hooks and blocks also visible.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/12042863
MLA citation style
National Aeronautics and Space Administration. Dryden Flight Research Center. 3/1/1994. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/12042863>.
Note: These citations are programmatically generated and may be incomplete.