Gaya APA

Rogers, M., Duffy, A. (2012). Engineering Project Appraisal: the evaluation of alternative development schemes (2 nd. ed.). West Sussex, UK: John Wiley and Sons, Ltd..

Gaya MLA

Rogers, Martin., Duffy, Aidan. "Engineering Project Appraisal: the evaluation of alternative development schemes". 2 nd. ed. West Sussex, UK: John Wiley and Sons, Ltd., 2012. Text.