Mitchell, W. L. (1970). Social Security in America. Vora.
Chicago Style aipamenaMitchell, William Loyd. Social Security in America. Bombay: Vora, 1970.
MLA aipamenaMitchell, William Loyd. Social Security in America. Vora, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.