Cite

[Signa tractatuum]

MLA

[Signa Tractatuum]. impressit Ioãnes Gruninger, 1509. https://collections.library.yale.edu/catalog/2004620.

APA, 6th edition

[Signa tractatuum]. (1509). [Illustrations]. impressit Ioãnes Gruninger. https://collections.library.yale.edu/catalog/2004620.