Perlin, F. (1994). The invisible city: Monetary, administrative and popular infrastructure in Asia & Europe 1500 - 1900. Variorum.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPerlin, Frank. The Invisible City: Monetary, Administrative and Popular Infrastructure in Asia & Europe 1500 - 1900. Variorum, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPerlin, Frank. The Invisible City: Monetary, Administrative and Popular Infrastructure in Asia & Europe 1500 - 1900. Variorum, 1994.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.