APA (7 वां संस्करण) प्रशस्ति पत्र

(2018). The World almanac and book of facts: 2018 (150th Anniversary Edition.). World Almanac Books.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

The World Almanac and Book of Facts: 2018. 150th Anniversary Edition. New York, New York: World Almanac Books, 2018.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

The World Almanac and Book of Facts: 2018. 150th Anniversary Edition. World Almanac Books, 2018.