American Heritage. (1970). The american heritage. American Heritage Publishing.
Dyfyniad Arddull ChicagoAmerican Heritage. The American Heritage. New York: American Heritage Publishing, 1970.
Dyfyniad MLAAmerican Heritage. The American Heritage. American Heritage Publishing, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.