Parker, R. G. (1872). Outlines of general history, in the form of question and answer: Designed as the foundation and the review of a course of historical reading (A new ed.). Harper & Bros..
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Parker, Richard Green. Outlines of General History, in the Form of Question and Answer: Designed as the Foundation and the Review of a Course of Historical Reading. A new ed. New York: Harper & Bros., 1872.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Parker, Richard Green. Outlines of General History, in the Form of Question and Answer: Designed as the Foundation and the Review of a Course of Historical Reading. A new ed. Harper & Bros., 1872.
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