National Council for the Social Studies. (1951). The teaching of contemporary affairs. s.n.
Chicago Style aipamenaNational Council for the Social Studies. The Teaching of Contemporary Affairs. Washington, D.C: s.n, 1951.
MLA aipamenaNational Council for the Social Studies. The Teaching of Contemporary Affairs. s.n, 1951.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.