Friters, G. M. (1949). Outer Mongolia and its international position. Johns Hopkins Press.
Lua i Stíl Chicago (17ú heag.)Friters, Gerard Martin. Outer Mongolia and Its International Position. Baltimore: Johns Hopkins Press, 1949.
Lua MLA (9ú heag.)Friters, Gerard Martin. Outer Mongolia and Its International Position. Johns Hopkins Press, 1949.
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