Target Training International, Ltd.

year of pub­li­ca­ti­onISBNauthor(s)title
1993978-0-9707531-0-6Bill J. Bonnstetter · Judy I. Suiter · Randy J. WidrickThe Universal Language DISC
2007978-0-9707531-1-3Bill J. Bonnstetter · Judy SuiterThe Universal Language DISC: A Reference Manual
2013978-0-9707531-3-7Bill J. Bonnstetter, Ronald Bonnstetter Eduard SprangerTypes of Men