Cita APA (7th ed.)

Downs, R. B. (1978). Books that changed the world (2nd ed.). American Library Association.

Cita Chicago (17th ed.)

Downs, Robert Bingham. Books That Changed the World. 2nd ed. Chicago: American Library Association, 1978.

Cita MLA (9th ed.)

Downs, Robert Bingham. Books That Changed the World. 2nd ed. American Library Association, 1978.