MLA

Browne, John, approximately 1608-1691. [The King's declaration to Parliament on breaking the Spanish treaties, 1623/4 Mar 23]. Box 1. [n.d.]. https://collections.library.yale.edu/catalog/31905924.

APA, 6th edition

Browne, John, approximately 1608-1691. (["Box 1"])([n.d.])[[The King's declaration to Parliament on breaking the Spanish treaties, 1623/4 Mar 23]]. https://collections.library.yale.edu/catalog/31905924.