Osias, C. O. (1965). The pioneering courage of man. [s.n.].
Chicagoスタイル(17版)引用形式Osias, Camilo Olaviano. The Pioneering Courage of Man. Manila: [s.n.], 1965.
MLA(9版)引用形式Osias, Camilo Olaviano. The Pioneering Courage of Man. [s.n.], 1965.
警告: この引用は必ずしも正確ではありません.