Maddox, R. P. (1990). "Spatium" and "Intervallum": The development of technical terms for "interval" in medieval treatises.
Chicago-Zitierstil (17. Ausg.)Maddox, Richard P. "Spatium" and "Intervallum": The Development of Technical Terms for "Interval" in Medieval Treatises. 1990.
MLA-Zitierstil (9. Ausg.)Maddox, Richard P. "Spatium" and "Intervallum": The Development of Technical Terms for "Interval" in Medieval Treatises. 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.