Não informado. (1930). Program of activities of the Chicago Academy of Sciences. Chicago Academy of Sciences.
Chicagoスタイル(17版)引用形式Não informado. Program of Activities of the Chicago Academy of Sciences. Chicago, Ill: Chicago Academy of Sciences, 1930.
MLA(8版)引用形式Não informado. Program of Activities of the Chicago Academy of Sciences. Chicago Academy of Sciences, 1930.
警告: この引用は必ずしも正確ではありません.