MLA

Evans, Estwick, 1787-1866. A pedestrious tour of four thousand miles through the western states and territories : during the winter and spring of 1818 : interspersed with brief reflections upon a great variety of topics ... / by Estwick Evans .... 1819. https://collections.library.yale.edu/catalog/16027387.

APA, 6th edition

Evans, Estwick, 1787-1866. (1819)[A pedestrious tour of four thousand miles through the western states and territories : during the winter and spring of 1818 : interspersed with brief reflections upon a great variety of topics ... / by Estwick Evans ...]. https://collections.library.yale.edu/catalog/16027387.