APA (7th ed.) Citation

Hockett, H. C. (1948). Introduction to research in American history (2d. ed.). Macmillan.

Chicago Style (17th ed.) Citation

Hockett, Homer C. Introduction to Research in American History. 2d. ed. New York: Macmillan, 1948.

MLA (9th ed.) Citation

Hockett, Homer C. Introduction to Research in American History. 2d. ed. Macmillan, 1948.