MLA

Temple, William, Sir, 1628-1699. A treatise concerning idleness, or the art of well imploying our time, by way of conferences. [ca. 1650]. https://collections.library.yale.edu/catalog/11415614.

APA, 6th edition

Temple, William, Sir, 1628-1699. ([ca. 1650])[A treatise concerning idleness, or the art of well imploying our time, by way of conferences]. https://collections.library.yale.edu/catalog/11415614.