Mehrotra, Chandra. Distance learning : principles for effective design, delivery, and evaluation / Chandra Mohan Mehrotra, C. David Hollister, Lawrence McGahey. - Thousand Oaks, Calif. : Sage Publications, 2001. - xiii, 242 p. ; 24 cm. ISBN: 0761920889 (hard : alk. paper) 0761920897 (pbk.) Subjects--Topical Terms: Distance education--Curricula.Education, Higher--Curricula.Instructional systems--Design. Dewey Class. No.: 374.4 / MEH P01D