2Christopher J.Zirkle.Distance Education: The State of the Art in Career and Technical Education[DB/OL]. http:/ /www.springerlink.com/content/h412k507t0807 417 / fulltext.pdf.
3Chris Zirkle,Edward C.Fletcher Jr. Utilizition of Distance Education in Career and Technical Education (CTE) Teacher Education[DB/OL]. http://www.engineerin-science -reference.com/down/oads/excerpts/34396.pdf.
4Angela D.Johson, Scott D Johnson.Distance Learning in Postsecondary Career and Technical Education :A comparison of Achievement in online VS.On-Campus CTE Courses[DB/OL]. Http:// www.nccte.org.pdf.
5Tarek M,Abdel-Salam and PaulJ.Kauffmann, Gary R.Crossmart Are Distance Laboratories Effective Tools for Technology Education?[J].The American Journal of Distance Education,2007, 21(2):77-91.
6Angela DJohson, Scott DJohnson3kistance Learning in Postsecondary Career and Technical Education/DB/OL]. Http://www.nccte. org.pdf.
8Chris Zirkle.Distance Education and Career and Technical Education:A Review of the Research Literature [DB/OL].http://scholar.lib.vcedu/ejoumals/JVER/v28n2/zirkle.html.
9Chris Zirkle.Ph.D, Chris Norris Amy Winegardner.Distance Education Programming Barriers in Business Education Teacher Programs in the United States[J].Career and Technical Education Research, 2006,31 (2): 101 - 118.
10Angela DJohson, Scott DJohnson.Distance Learning in Postsecondary Career and Technical Education[DB/OL] Http://www.nccte.org.pdf.
