MLA

Carlyle, Thomas, 1795-1881. On heroes, hero-worship, and the heroic in history : six lectures / reported, with emendations and additions, by Thomas Carlyle.. 1842. https://collections.library.yale.edu/catalog/10189897.

APA, 6th edition

Carlyle, Thomas, 1795-1881. (1842)[On heroes, hero-worship, and the heroic in history : six lectures / reported, with emendations and additions, by Thomas Carlyle.]. https://collections.library.yale.edu/catalog/10189897.