FazziD. L., & PetersmeyerB. A. (2001). Imagining the possibilities: Creative approaches to orientation and mobility instruction for persons who are visually impaired.New York: AFB Press.
2.
TaplinM., YumJ., JegedeO., FanR., & ChanM. (2001). Helping-seeking strategies used by high-achieving and low-achieving distance educating students. Journal of Distance Education, 16, 56–59.