Cita APA (7a ed.)

Webster, W. C. (1918). A general history of commerce (Rev. ed.). Ginn and Company.

Cita Chicago Style (17a ed.)

Webster, William Clarence. A General History of Commerce. Rev. ed. Boston [etc.]: Ginn and Company, 1918.

Cita MLA (9a ed.)

Webster, William Clarence. A General History of Commerce. Rev. ed. Ginn and Company, 1918.