American University (Washington, D.C.). Foreign Area Studies, & Nyrop, R. F. (1977). Area handbook for the Persian Gulf States. for sale by the Supt. of Docs., U.S. Govt. Print. Off..
Cita Chicago (17th ed.)American University (Washington, D.C.). Foreign Area Studies, i Richard F. Nyrop. Area Handbook for the Persian Gulf States. Washington: for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1977.
Cita MLA (8th ed.)American University (Washington, D.C.). Foreign Area Studies, i Richard F. Nyrop. Area Handbook for the Persian Gulf States. for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1977.
Atenció: Aquestes cites poden no estar 100% correctes.