APA
Hill C. P., United Nations Educational S. a. C. O. (., . (1953). Suggestions on the teaching of history. Paris: UNESCO.
Chicago
Hill C P, United Nations Educational Scientific and Cultural Organisation (Paris), . 1953. Suggestions on the teaching of history. Paris: UNESCO.
Harvard
Hill C. P., United Nations Educational S. a. C. O. (., . (1953). Suggestions on the teaching of history. Paris: UNESCO.
MLA
Hill C P, United Nations Educational Scientific and Cultural Organisation (Paris), . Suggestions on the teaching of history. Paris: UNESCO. 1953.