British Guiana. Dept. of Lands and Mines & Anderson, C. W. (1912). Forests of British Guiana: Detail reports. The forests of the north-western district of the county of Essequibo. Forest districts 1-4. Dept. of Lands and Mines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)British Guiana. Dept. of Lands and Mines و Charles Wilgress Anderson. Forests of British Guiana: Detail Reports. The Forests of the North-western District of the County of Essequibo. Forest Districts 1-4. Georgetown, Demerara: Dept. of Lands and Mines, 1912.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)British Guiana. Dept. of Lands and Mines و Charles Wilgress Anderson. Forests of British Guiana: Detail Reports. The Forests of the North-western District of the County of Essequibo. Forest Districts 1-4. Dept. of Lands and Mines, 1912.