TY - BOOK TI - Principles of instructional design 5th ed AU - Gagne, Robert M. (Robert Mills), 1916-2002. SN - 0534582842 PB - Thomson/Wadsworth PP - Belmont, CA : Thomson/Wadsworth, c2005. PY - 2005 UR - https://library.korea.ac.kr/detail/?cid=CAT000045751867&ctype=m