Citazione APA

Library of Congress. Federal Research Division, Worden, R. L., & Savada, A. M. (1991). Mongolia: A country study (2nd ed.). For sale by the Supt. of Docs., U.S. G.P.O..

Stile di citazione Chicago

Library of Congress. Federal Research Division, Robert L. Worden, e Andrea Matles Savada. Mongolia: A Country Study. 2nd ed. Washington, D.C.: For sale by the Supt. of Docs., U.S. G.P.O., 1991.

Citazione MLA

Library of Congress. Federal Research Division, et al. Mongolia: A Country Study. 2nd ed. For sale by the Supt. of Docs., U.S. G.P.O., 1991.