Trích dẫn APA

Barkers, E. (1927). National character and the factors in its formation. New York: Harper & Brothers Publishers.

Trích dẫn kiểu Chicago

Barkers, Ernest. National Character and the Factors in Its Formation. New York: Harper & Brothers Publishers, 1927.

Trích dẫn MLA

Barkers, Ernest. National Character and the Factors in Its Formation. New York: Harper & Brothers Publishers, 1927.

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