Gaya APA

Kelly, R, J, R. et al (2015). Introduction To Information Systems (5th Edition). Singapore: John Wiley & Sons Singapore Ptd. Ltd.c..

Gaya MLA

Kelly, Rainer, Jr.,, R.. et al. "Introduction To Information Systems ". 5th Edition Singapore: John Wiley & Sons Singapore Ptd. Ltd.c., 2015. .