Não informado. (2001). Birds and nature magazine. Nature Study Publishing.
Chicagoスタイル(17版)引用形式Não informado. Birds and Nature Magazine. Chicago, Ill: Nature Study Publishing, 2001.
MLA(8版)引用形式Não informado. Birds and Nature Magazine. Nature Study Publishing, 2001.
警告: この引用は必ずしも正確ではありません.