^Jeffrey O. Bennett, Mark Voit, Nicholas O Schneider, Megan O. DonahueThe Essential Cosmic Perspective by Megan O. Donahue, Jeffrey O. Bennett, Nicholas O. Schneider and Mark Voit (2010, Paperback, Revised)ISBN 9780321718235 (revised May 2017)
^Bennett, Jeffrey O.; Donahue, Megan O.; Schneider, Nicholas; Voit, Mark (2014). The Essential Cosmic Perspective, Addison-Wesley. BiggerBooks. ISBN 9780321718235 (revised Sep 2024)
^Jeffrey O. Bennett, Megan Donahue, Nicholas O Schneider (2012). The Essential Cosmic Perspective, Pearson Education. Indigo. ISBN 9780321718235 (revised Apr 2017)