Karen Speerstra
John Muir
Richard Boleslavsky
Группа авторов
Abraham H. Maslow
Anonymous
Rachel Brown
Chris Thompson
Georgina Fowler
Minisa Robinson
Simon Easton
Barry Gross
Enid G. Svymbersky
Michael Powell
Wendy Sheppard
Rita Buchanan
Renee Mery
Lee Merrill Byrd
Sylvia Zéleny
Донна Леон