APA
SHELLY G. B., CASHMAN T. J. & Rosenblatt j. H. (1998). SYSTEMS. LONDON: COURSE TECHNOLOGY.
Chicago
SHELLY GARY B, CASHMAN THOMAS J and Rosenblatt j Harry. 1998. SYSTEMS. LONDON: COURSE TECHNOLOGY.
Harvard
SHELLY G. B., CASHMAN T. J. and Rosenblatt j. H. (1998). SYSTEMS. LONDON: COURSE TECHNOLOGY.
MLA
SHELLY GARY B, CASHMAN THOMAS J and Rosenblatt j Harry. SYSTEMS. LONDON: COURSE TECHNOLOGY. 1998.