Cita APA (7a ed.)
Peters, E. (1977). Europe: The world of the Middle Ages. Prentice-Hall.
Cita Chicago Style (17a ed.)
Peters, Edward. Europe: The World of the Middle Ages. Englewood Cliffs, N.J.: Prentice-Hall, 1977.
Cita MLA (9a ed.)
Peters, Edward. Europe: The World of the Middle Ages. Prentice-Hall, 1977.
Precaución: Estas citas no son 100% exactas.