David Singer, DC, is a chiropractor, a Scientologist, and the founder, in 1981, of the controversial consulting firm now known as David Singer Enterprises. Singer is an accomplished speaker primarily engaged in training chiropractors to increase the efficiency and profitability of their practices. The firm and its predecessor Singer Consulting, however, have also brought hundreds of new members into the Church of Scientology, … Wikipedia
Statistics from Prosperity 59, the magazine of WISE, the World Institute of Scientology Enterprises. What's the truth about Scientology? www.truthaboutscientology.com/stats/prosp/prosperity059.html
The definitive Wikipedia entry for David Singer. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/David_Singer