MLA

Stillingfleet, Edward, 1635-1699. The mischief of separation : a sermon preached at Guild-Hall Chappel, May 11, MDCLXXX, being the first Sunday in the Eatser [!] term ... By Edw. Stillingfleet .... 1680. https://collections.library.yale.edu/catalog/2035264.

APA, 6th edition

Stillingfleet, Edward, 1635-1699. (1680)[The mischief of separation : a sermon preached at Guild-Hall Chappel, May 11, MDCLXXX, being the first Sunday in the Eatser [!] term ... By Edw. Stillingfleet ...]. https://collections.library.yale.edu/catalog/2035264.