APA
Porter T. &. G. B., . (1980). Manual of graphic techniques 1. London: Butterworth Architecture.
Chicago
Porter Tom & Greenstreet Bob, . 1980. Manual of graphic techniques 1. London: Butterworth Architecture.
Harvard
Porter T. &. G. B., . (1980). Manual of graphic techniques 1. London: Butterworth Architecture.
MLA
Porter Tom & Greenstreet Bob, . Manual of graphic techniques 1. London: Butterworth Architecture. 1980.