TY - BOOK TI - Essentials of systems : analysis and design 5th ed AU - Valacich, Joseph S., 1959-. AU - George, Joey F. AU - Hoffer, Jeffrey A. SN - 9780137067114 PB - Prentice Hall PP - Upper Saddle River, N.J. : Prentice Hall, c2012. PY - 2012 UR - https://library.korea.ac.kr/detail/?cid=CAT000045829151&ctype=m