Riyāḍ, Hinrī. <br/><br/>
Ḥaqq al-ʻamal ʻabra al-tārīkh / 
Hinrī Riyāḍ. 
 - al-Ṭabʻah 1. 
 - al-Kharṭūm :  Maktabat al-Nahḍah al-Sūdānīyah,  1965. 
 - 94 p. ; 22 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 91-92. 
<br/><br/><label>LCCN: </label>ne 66001559  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Right to labor.
<br/><br/><label>LC Class. No.: </label>HD4903  / .R5