This <i>W3C-unspecified</i> <a href="https://en.wikipedia.org/wiki/Vector_images" class="extiw" title="w:Vector images">vector image</a> was created with <a href="https://en.wikipedia.org/wiki/Adobe_Illustrator" class="extiw" title="w:Adobe Illustrator">Adobe Illustrator</a>.
NASA/David Portree ~ Corrections, colouring and optimised by <a href="//commons.wikimedia.org/wiki/User:Fred_the_Oyster" title="User:Fred the Oyster">Fred the Oyster</a>
1975-03
David Portree (March 1995). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20190926081306/https://www.webcitation.org/5il9QixAg?url=http%3A%2F%2Fston.jsc.nasa.gov%2Fcollections%2FTRS%2F_techrep%2FRP1357.pdf">Mir Hardware Heritage</a>. <i>NASA Reference Publication 1357</i>. Archived from <a rel="nofollow" class="external text" href="http://ston.jsc.nasa.gov/collections/TRS/_techrep/RP1357.pdf">the original</a> on <span class="mw-formatted-date" title="2019-09-26">2019-09-26</span>. Retrieved on <span class="mw-formatted-date" title="2011-08-11">2011-08-11</span>.