APA ציטוט

Heilbroner, R. L. (1974). An inquiry into the human prospect. New York: Norton.

Trích dẫn kiểu Chicago

Heilbroner, Robert L. An Inquiry Into the Human Prospect. New York: Norton, 1974.

ציטוט MLA

Heilbroner, Robert L. An Inquiry Into the Human Prospect. New York: Norton, 1974.