APA (7th ed.) Citation

Freidel, F., Showman, R. K., & Handlin, O. (1974). Harvard guide to American history (Rev. ed.). Belknap Press of Harvard University Press.

Chicago Style (17th ed.) Citation

Freidel, Frank, Richard K. Showman, and Oscar Handlin. Harvard Guide to American History. Rev. ed. Cambridge, Mass.: Belknap Press of Harvard University Press, 1974.

MLA (9th ed.) Citation

Freidel, Frank, et al. Harvard Guide to American History. Rev. ed. Belknap Press of Harvard University Press, 1974.