APA (7 ম সংস্করণ) উদ্ধৃতি

Library of Congress. Federal Research Division & Curtis, G. E. (1993). Bulgaria: A country study (2nd ed.). Federal Research Division, Library of Congress : For sale by the Supt. of Docs., U.S. G.P.O..

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Library of Congress. Federal Research Division এবং Glenn E. Curtis. Bulgaria: A Country Study. 2nd ed. Washington, D.C.: Federal Research Division, Library of Congress : For sale by the Supt. of Docs., U.S. G.P.O., 1993.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Library of Congress. Federal Research Division এবং Glenn E. Curtis. Bulgaria: A Country Study. 2nd ed. Federal Research Division, Library of Congress : For sale by the Supt. of Docs., U.S. G.P.O., 1993.