Cita APA

BURNS, E. M. (1949). The American social security system. Houghton Mifflin Company.

Citación estilo Chicago

BURNS, Eveline M. The American Social Security System. Boston: Houghton Mifflin Company, 1949.

Cita MLA

BURNS, Eveline M. The American Social Security System. Houghton Mifflin Company, 1949.