Cite

Letter (copy) to Samuel Hartlib (d. 1670?); Oxford

MLA

Letter (Copy) to Samuel Hartlib (d. 1670?); Oxford. 1650. https://collections.library.yale.edu/catalog/10034162.

APA, 6th edition

Letter (copy) to Samuel Hartlib (d. 1670?); Oxford. (1650). https://collections.library.yale.edu/catalog/10034162.