Znamierowski, Alfred. (2003) Illustrated Book of Flags. Southwater. ISBN 1-84215-881-3. “The designs of these flags were later modified, but the four pan-Arab colors were retained and were adopted by Transjordan (1921), Palestine (1922), Kuwait (1961), the United Arab Emirates (1971), Western Sahara (1976) and Somaliland (1996).”.
worldcat.org
Teitelbaum, Joshua. (2001) The rise and fall of the Hashimite kingdom of Arabia. New York University Press. ISBN 1-85065-460-3. OCLC45247314.
Marshall, Tim. (2017) A flag worth dying for : the power and politics of national symbols. Scribner, an imprint of Simon & Schuster, Inc, p. 110–111. ISBN 978-1-5011-6833-8. OCLC962006347.