Template: RefSFUPD20Modern

Thompson, Jonathan M. (ed.) Prime Directive PD20 Modern, revised edition. Star Fleet Universe. Additional material by Stephen V. Cole, Gary Plana, Steven P. Petrick, Matthew Francois, Loren Knight, and Alex Chobot. Edited and additional material by Jean Sexton. Cover by Adam Turner. Illustrations by Alvin Belflower, Dale McKee, and Loren Knight. Computer Graphics by Ted Geibel, Adam Turner, and Stephen V. Cole. Deck Plans by Nick Blank. Layout by Michael Sparks. Some background elements were originally created for the first edition of Prime Directive by Timothy D. Olsen and Mark Costello. Developed by Jean Sexton, Tony Thomas, and Andy Palmer. Playtested by Jonathan Thompson, Clay Weeks, Carey Weeks, Tracey Castanes, Terrence Thompson, Lee Wood, Christopher Helton, and Gene Wilson. Amarillo Design Bureau, Inc., 6 October 2008 (Revised 2 Jan 2010).