Douglass, A. (1881). Ostrich farming in South Africa. Cassell, Peter, Galpin.
Chicagoスタイル(17版)引用形式Douglass, Arthur. Ostrich Farming in South Africa. London: Cassell, Peter, Galpin, 1881.
MLA(9版)引用形式Douglass, Arthur. Ostrich Farming in South Africa. Cassell, Peter, Galpin, 1881.
警告: この引用は必ずしも正確ではありません.