Duffus, R. L. (1930). Books: Their place in a democracy. Houghton Mifflin company.
Chicagoスタイル(17版)引用形式Duffus, R. L. Books: Their Place in a Democracy. Boston: Houghton Mifflin company, 1930.
MLA(8版)引用形式Duffus, R. L. Books: Their Place in a Democracy. Houghton Mifflin company, 1930.
警告: この引用は必ずしも正確ではありません.