Cite

A door opened for equal Christian liberty, and no man can shut it

MLA

Backus, Isaac, 1724-1806. A door opened for equal Christian liberty, and no man can shut it. Box 3, folder 6. 1783. https://collections.library.yale.edu/catalog/33542871.

APA, 6th edition

Backus, Isaac, 1724-1806. (["Box 3, folder 6"])(1783)[A door opened for equal Christian liberty, and no man can shut it]. https://collections.library.yale.edu/catalog/33542871.