Cita APA (7a ed.)

Roberto Kilwardby 1215?-1279 & Lewry, P. O. (1987). On time and imagination ; De tempore ; De spiritu fantastico. The British Academy.

Cita Chicago Style (17a ed.)

Roberto Kilwardby 1215?-1279 y Patrick Osmund Lewry. On Time and Imagination ; De Tempore ; De Spiritu Fantastico. London: The British Academy, 1987.

Cita MLA (9a ed.)

Roberto Kilwardby 1215?-1279 y Patrick Osmund Lewry. On Time and Imagination ; De Tempore ; De Spiritu Fantastico. The British Academy, 1987.