Change in a Malay Sultanate: an historical geography of kedah before 1939 - Zaharah Mahmud, 1942-; Universiti Malaya. Fakulti Sastera dan Sains Sosial (Kuala Lumpur : University of Malaya Library, 1972)
Dissertation (M.A.) -- Fakulti Sastera dan Sains Sosial, Universiti Malaya, 1966
Keywords: Kedah -- Historical geography