MLA

Kitchin, Thomas, 1719-1784. South Britain or England & Wales : drawn from several surveys &c. on the new projection, corrected from astronomical observations, & the places marked where the observat. were made. 1st of Jany. 1787.. https://collections.library.yale.edu/catalog/2046603.

APA, 6th edition

Kitchin, Thomas, 1719-1784. (1st of Jany. 1787.)[South Britain or England & Wales : drawn from several surveys &c. on the new projection, corrected from astronomical observations, & the places marked where the observat. were made]. https://collections.library.yale.edu/catalog/2046603.