Friedmann, H. (1942). The natural-history background of camouflage. The Smithsonian Institution.
Chicagoスタイル(17版)引用形式Friedmann, Herbert. The Natural-history Background of Camouflage. Washington, D.C: The Smithsonian Institution, 1942.
MLA(9版)引用形式Friedmann, Herbert. The Natural-history Background of Camouflage. The Smithsonian Institution, 1942.
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