Cite

Tractatus de spera d[e] Ioha[nn]is de sac[ro] busco. Theorica planetaru[m].

MLA

Tractatus De Spera d[e] Ioha[Nn]Is De Sac[Ro] Busco. Theorica Planetaru[m]. 1467. https://collections.library.yale.edu/catalog/16960301.

APA, 6th edition

Tractatus de spera d[e] Ioha[nn]is de sac[ro] busco. Theorica planetaru[m]. (1467). [Early works to 1800, Armorial bookplates, Illuminated manuscripts, Palimpsests (manuscript).]. https://collections.library.yale.edu/catalog/16960301.