Liechti, P., Roe, F. W., & Haile, N. S. (1960). The geology of Sarawak, Brunei and the western part of North Borneo: Compiled from the work of the Royal Dutch Shell Group of companies in the British Territories in Borneo and from various published accounts. Government Printing Office.
Cita Chicago (17th ed.)Liechti, P., F. W. Roe, i Neville Seymour Haile. The Geology of Sarawak, Brunei and the Western Part of North Borneo: Compiled from the Work of the Royal Dutch Shell Group of Companies in the British Territories in Borneo and from Various Published Accounts. Kuching, Sarawak: Government Printing Office, 1960.
Cita MLA (9th ed.)Liechti, P., et al. The Geology of Sarawak, Brunei and the Western Part of North Borneo: Compiled from the Work of the Royal Dutch Shell Group of Companies in the British Territories in Borneo and from Various Published Accounts. Government Printing Office, 1960.