Cita APA (7th ed.)
Khalid, A. Water supply in republic of Yemen. Modern state and directions of perfection.
Cita Chicago (17th ed.)Khalid, Abdo. Water Supply in Republic of Yemen. Modern State and Directions of Perfection.
Cita MLA (8th ed.)Khalid, Abdo. Water Supply in Republic of Yemen. Modern State and Directions of Perfection.
Atenció: Aquestes cites poden no estar 100% correctes.