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..

American University (Washington, D.C.). Foreign Area Studies, and Richard F. Nyrop. Area Handbook for the Persian Gulf States. Washington: for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1977.

American University (Washington, D.C.). Foreign Area Studies, and Richard F. Nyrop. Area Handbook for the Persian Gulf States. for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1977.