Cita APA (7a ed.)

Gervaise, I. (1954). The system or theory of the trade of the world. Johns Hopkins Press.

Cita Chicago Style (17a ed.)

Gervaise, Isaac. The System or Theory of the Trade of the World. Baltimore: Johns Hopkins Press, 1954.

Cita MLA (9a ed.)

Gervaise, Isaac. The System or Theory of the Trade of the World. Johns Hopkins Press, 1954.