Dorward, D. C. (1981). Annual departmental reports relating to the Gambia, 1881-1966. EP Microform.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDorward, D. C. Annual Departmental Reports Relating to the Gambia, 1881-1966. East Ardsley, Wakefield, Yorkshire, England: EP Microform, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDorward, D. C. Annual Departmental Reports Relating to the Gambia, 1881-1966. EP Microform, 1981.
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