MLA

Lyford, William, 1598-1653. Principles of faith & good conscience : digested into a catecheticall form : together with an appendix .... 1650. https://collections.library.yale.edu/catalog/2041599.

APA, 6th edition

Lyford, William, 1598-1653. (1650)[Principles of faith & good conscience : digested into a catecheticall form : together with an appendix ...]. https://collections.library.yale.edu/catalog/2041599.