Cita APA (7a ed.)

Wiet, G., Devisse, J., Meggers, B. J., & Green, R. P. H. (1975). The great medieval civilizations. George Allen und Unwin.

Cita Chicago Style (17a ed.)

Wiet, Gaston, Jean Devisse, Betty Jane Meggers, y Roger P. H. Green. The Great Medieval Civilizations. London: George Allen und Unwin, 1975.

Cita MLA (9a ed.)

Wiet, Gaston, et al. The Great Medieval Civilizations. George Allen und Unwin, 1975.