Ribbentrop, B. (1989). Forestry in British India. Indus Publishing.
Chicagoスタイル(17版)引用形式Ribbentrop, Berthold. Forestry in British India. New Delhi: Indus Publishing, 1989.
MLA(9版)引用形式Ribbentrop, Berthold. Forestry in British India. Indus Publishing, 1989.
警告: この引用は必ずしも正確ではありません.