Gaya APA

George, J, S, V, &, J, F. (2021). "Modern System Analysis and Design – 9th Edition, Global Edition| (Ed. 9). Essex, UK: Pearson Education Limited.

Gaya MLA

George, Joseph, S., Valacich, &, Joey, F.. ""Modern System Analysis and Design – 9th Edition, Global Edition|". Ed. 9 Essex, UK: Pearson Education Limited, 2021. book.