adapted by Chris Turnbull, Principal Examiner and moderator for IGCSE Business Studies and Carol Watson ; edited by Michelé GreenbankCambridge university Press2000
by Kenneth A. Erickson, and Albert W. Smith ; research assistants, Stafford Binder, Kathryn Ingraham, Jennifer Nash ; graphic artists, Kathryn Ingraham ... [et al.] ; production assistants, Richard Heede ... [et al.] ; typing Carol WatsonColorado Associated University Pressc1985