APA (7 वां संस्करण) प्रशस्ति पत्र

Italy, Del Duca, L. F., & Del Duca, P. L. (1983). Commercial, business, and trade laws: Italy. Oceana Publications.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Italy, Louis F. Del Duca, और Patrick L. Del Duca. Commercial, Business, and Trade Laws: Italy. Dobbs Ferry, N.Y: Oceana Publications, 1983.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Italy, et al. Commercial, Business, and Trade Laws: Italy. Oceana Publications, 1983.