APA (7 वां संस्करण) प्रशस्ति पत्र

Kohn, M. (2019). Four words for friends: Why using more than one language matters now more than ever. Yale University Press.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Kohn, Marek. Four Words for Friends: Why Using More than One Language Matters Now More than Ever. New Haven: Yale University Press, 2019.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Kohn, Marek. Four Words for Friends: Why Using More than One Language Matters Now More than Ever. Yale University Press, 2019.