APA (7 ম সংস্করণ) উদ্ধৃতি

Firth, B. W. (1997). The firm league of friendship: A restoration of the classical studies. Pentland Press.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Firth, Brian W. The Firm League of Friendship: A Restoration of the Classical Studies. Edinburgh: Pentland Press, 1997.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Firth, Brian W. The Firm League of Friendship: A Restoration of the Classical Studies. Pentland Press, 1997.