APA

Smith Adam, . (1909). An inquiry into the nature and causes of the wealth of nations. New York: Collier & Son Company.

Chicago

Smith Adam, . 1909. An inquiry into the nature and causes of the wealth of nations. New York: Collier & Son Company.

Harvard

Smith Adam, . (1909). An inquiry into the nature and causes of the wealth of nations. New York: Collier & Son Company.

MLA

Smith Adam, . An inquiry into the nature and causes of the wealth of nations. New York: Collier & Son Company. 1909.