Steel, R. (1980). Walter Lippmann and the American century: By Ronald Steel. Little, Brown.
Chicago-Zitierstil (17. Ausg.)Steel, Ronald. Walter Lippmann and the American Century: By Ronald Steel. Boston: Little, Brown, 1980.
MLA-Zitierstil (8. Ausg.)Steel, Ronald. Walter Lippmann and the American Century: By Ronald Steel. Little, Brown, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.