Keefe, E. K. (1971). Area handbook for the Soviet Union. For sale by the Supt. of Docs., U.S. Govt. Print. Off.].
Cita Chicago (17th ed.)Keefe, Eugene K. Area Handbook for the Soviet Union. Washington: For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971.
Cita MLA (8th ed.)Keefe, Eugene K. Area Handbook for the Soviet Union. For sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1971.
Atenció: Aquestes cites poden no estar 100% correctes.