Cita APA (7a ed.)

Helmer, W. J., & Winkeler, G. (2011). Al Capone and His American Boys: Memoirs of a Mobster's Wife. Indiana University Press.

Cita Chicago Style (17a ed.)

Helmer, William J., y Georgette Winkeler. Al Capone and His American Boys: Memoirs of a Mobster's Wife. Bloomington: Indiana University Press, 2011.

Cita MLA (8a ed.)

Helmer, William J., y Georgette Winkeler. Al Capone and His American Boys: Memoirs of a Mobster's Wife. Indiana University Press, 2011.