Cita APA (7a ed.)

Barker, E. C., Duncalf, F., & Bacon, F. L. (1938). Old Europe and our nation. Row, Peterson and Co..

Cita Chicago Style (17a ed.)

Barker, Eugene Campbell, Frederic Duncalf, y Francis L. Bacon. Old Europe and Our Nation. Evanston, Ill.: Row, Peterson and Co., 1938.

Cita MLA (8a ed.)

Barker, Eugene Campbell, et al. Old Europe and Our Nation. Row, Peterson and Co., 1938.