Douglas Macgregor
Barrett Tillman
Paul G. Halpern
Richard Wheeler
Alan Rems
Robert H. Shultz
George Galdorisi
Martin J. Bollinger
Rick Eilert
George Melton
Betty Lussier
Jon K. Henderson
Martin Sheridan
Kenny Wayne Fields
Martin W. Clemens
Robert O. Harder
Christopher D. Yung
James C. Bresnahan
Группа авторов
Henry Russell
