APA (7 वां संस्करण) प्रशस्ति पत्र

LEWIS, P. H. (1996). Tomorrow by design: A regional design process for sustainability. John Wiley and Sons.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

LEWIS, Philip H. Tomorrow by Design: A Regional Design Process for Sustainability. New York: John Wiley and Sons, 1996.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

LEWIS, Philip H. Tomorrow by Design: A Regional Design Process for Sustainability. John Wiley and Sons, 1996.