Cite

ALS to Richard Boyle, 1st earl of Burlington, Castelyons.

MLA

ALS to Richard Boyle, 1st Earl of Burlington, Castelyons. 1665. https://collections.library.yale.edu/catalog/17366204.

APA, 6th edition

ALS to Richard Boyle, 1st earl of Burlington, Castelyons. (1665). https://collections.library.yale.edu/catalog/17366204.