APA (7 ম সংস্করণ) উদ্ধৃতি

Challis, J. (1969). Annotated bibliography of economic and social material in Sabah (North Borneo) and Sarawak. Economic Research Centre, University of Singapore.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Challis, Joyce. Annotated Bibliography of Economic and Social Material in Sabah (North Borneo) and Sarawak. Singapore: Economic Research Centre, University of Singapore, 1969.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Challis, Joyce. Annotated Bibliography of Economic and Social Material in Sabah (North Borneo) and Sarawak. Economic Research Centre, University of Singapore, 1969.