Cita APA (7a ed.)

Ricker, J. C., & Saywell, J. T. (1976). The emergence of Europe. Clarke, Irwin & Co..

Cita Chicago Style (17a ed.)

Ricker, John C., y John T. Saywell. The Emergence of Europe. Toronto: Clarke, Irwin & Co., 1976.

Cita MLA (8a ed.)

Ricker, John C., y John T. Saywell. The Emergence of Europe. Clarke, Irwin & Co., 1976.