Baldry, John: Zeitschrift der Deutschen Morgenländischen Gesellschaft / The British Military Administration of Al-Hudaydah, Yemen December 1918 to January 1921, 2014
 

Zeitschrift der Deutschen Morgenländischen GesellschaftBd. 135 (1985)The British Military Administration of Al-Hudaydah, Yemen December 1918 to January 1921