Cite

[Map of the Valtellina valley in northern Italy].

MLA

Schnierl, Hans Conrad. [Map of the Valtellina Valley in Northern Italy]. s.n., 1637. https://collections.library.yale.edu/catalog/2111116.

APA, 6th edition

Schnierl, H. C. (1637). [Map of the Valtellina valley in northern Italy]. [Maps, Early works to 1800, Manuscript waste (Binding)]. s.n. https://collections.library.yale.edu/catalog/2111116.