APA (7th ed.) Citation

King, W. B., & O'Brien, F. (1947). The Balkans: Frontier of two worlds ([1st ed.].). A.A. Knopf.

Chicago Style (17th ed.) Citation

King, William B., and Frank O'Brien. The Balkans: Frontier of Two Worlds. [1st ed.]. New York: A.A. Knopf, 1947.

MLA (9th ed.) Citation

King, William B., and Frank O'Brien. The Balkans: Frontier of Two Worlds. [1st ed.]. A.A. Knopf, 1947.