Butterfield, H. (1949). Official history: Its pitfalls and its criteria.
Chicago Style (17th ed.) CitationButterfield, Herbert. Official History: Its Pitfalls and Its Criteria. 1949.
MLA (9th ed.) CitationButterfield, Herbert. Official History: Its Pitfalls and Its Criteria. 1949.
Warning: These citations may not always be 100% accurate.
