Pikes peak and garden of the gods: two worlds one vision
photographic portfolios by Todd Caudle; editing by Jane Turnis
Skyline Press, 1996
 Buku Referensi
Barton, David, editor
Local literacies reading and writing in one community
Routledge , 1998
 Buku Teks SO
Kyte, Thomas
Expert one-on-one oracle
Apress, 2001
 Buku Teks
The 1981[nineteen hundred and eighty-one] annual handbook for group facilitators : the tenth annual
Editors, John E. Jones and J. William Pfeiffer
University Associates, 1981
 Buku Teks SO
The 1976 [one thousand nine hundred seventy-six] annual handbook for group facilitators: the fifth annual
Edited by J. William Pfeiffer and John E. Jones
University Associates, 1976
 Buku Teks SO