Modern Systems Analysis and Design
av Jeffrey A. Hoffer, Joey F. George, Joseph S. Valacich (2007)
Managing information technology
av Carol V. Brown, Daniel Wesley DeHayes, Jeffrey A Hoffer m.fl. (2013)
Hoffer:Modern Database Management International Edition_p11
av Jeffrey A. Hoffer, V. Ramesh, Heikki Topi (2012)