APA (7 ম সংস্করণ) উদ্ধৃতি

Frankel, R. P. (2007). Observing America: The commentary of British visitors to the United States, 1890-1950. University of Wisconsin Press.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Frankel, Robert Perry. Observing America: The Commentary of British Visitors to the United States, 1890-1950. Madison, Wis.: University of Wisconsin Press, 2007.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Frankel, Robert Perry. Observing America: The Commentary of British Visitors to the United States, 1890-1950. University of Wisconsin Press, 2007.