Algorismus ; Tractatum de sphaera.

MLA

Sacro Bosco, Joannes de and Lawrence J. Schoenberg Collection (University of Pennsylvania). Algorismus ; Tractatum de sphaera. [Italy], [between 1225 and 1275]

APA

Sacro Bosco, J. & Lawrence J. Schoenberg Collection (University of Pennsylvania). (1225). Algorismus ; Tractatum de sphaera. [Italy].

Chicago

Sacro Bosco, Joannes de and Lawrence J. Schoenberg Collection (University of Pennsylvania). Algorismus ; Tractatum de sphaera. [Italy], [between 1225 and 1275]