Cita APA (7a ed.)
Kaufmann, J. E., & Kaufmann, H. W. (2006). Fortress France: The Maginot Line and French defenses in World War II. Praeger Security International.
Cita Chicago Style (17a ed.)
Kaufmann, J. E., y H. W. Kaufmann. Fortress France: The Maginot Line and French Defenses in World War II. Westport, Conn.: Praeger Security International, 2006.
Cita MLA (9a ed.)
Kaufmann, J. E., y H. W. Kaufmann. Fortress France: The Maginot Line and French Defenses in World War II. Praeger Security International, 2006.
Precaución: Estas citas no son 100% exactas.