APA (7th ed.) Citation

Hacker, L. M., Kendrick, B. B., & Zahler, H. S. (1949). The United States since 1865 (4th ed.). Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Hacker, Louis M., Benjamin Burks Kendrick, and Helene Sara Zahler. The United States Since 1865. 4th ed. New York: Appleton-Century-Crofts, 1949.

MLA (8th ed.) Citation

Hacker, Louis M., et al. The United States Since 1865. 4th ed. Appleton-Century-Crofts, 1949.