Analysis of Changes in Estimated Cost of the Skylab ProgramUnited States Accounting Office (GAO) · First published 2018Open the Tome
Skylab, America's First Space Station ProgramJohnson Space Center (JSC), World Spaceflight News · First published 2017Open the Tome
Catalog of observation times of ground-based Skylab-coordinated solar observing programsHelen E. Coffey · First published 1975Open the Tome
Skylab program descriptionUnited States. National Aeronautics and Space Administration. · First published 1971Open the Tome
