Bradford, E. F. (1972). The geology and mineral resources of the Gunong Jerai area, Kedah. Jabatan Chetak Kerajaan.
Chicago Style (17th ed.) CitationBradford, Ernest Frederick. The Geology and Mineral Resources of the Gunong Jerai Area, Kedah. Ipoh: Jabatan Chetak Kerajaan, 1972.
MLA (9th ed.) CitationBradford, Ernest Frederick. The Geology and Mineral Resources of the Gunong Jerai Area, Kedah. Jabatan Chetak Kerajaan, 1972.
Warning: These citations may not always be 100% accurate.