APA
Porter T. &. G. S., . (19851983). Manual of graphic techniques 4. London: Butterworth Architecture.
Chicago
Porter Tom & Goodman Sue, . 19851983. Manual of graphic techniques 4. London: Butterworth Architecture.
Harvard
Porter T. &. G. S., . (19851983). Manual of graphic techniques 4. London: Butterworth Architecture.
MLA
Porter Tom & Goodman Sue, . Manual of graphic techniques 4. London: Butterworth Architecture. 19851983.