APA (7th ed.) Citation

Alden, J. R., & Magenis, A. (1960). A history of the United States. American Book.

Chicago Style (17th ed.) Citation

Alden, John Richard, and Alice Magenis. A History of the United States. [New York]: American Book, 1960.

MLA (9th ed.) Citation

Alden, John Richard, and Alice Magenis. A History of the United States. American Book, 1960.