Não informado. (2004). Knowledge: An illustrated magazine of science. [s.n.].
Chicagoスタイル(17版)引用形式Não informado. Knowledge: An Illustrated Magazine of Science. [s.l.]: [s.n.], 2004.
MLA(8版)引用形式Não informado. Knowledge: An Illustrated Magazine of Science. [s.n.], 2004.
警告: この引用は必ずしも正確ではありません.