Vernoff, E., & Shore, R. (1987). The international dictionary of 20th century biography. New American Library.
Dyfyniad Arddull ChicagoVernoff, Edward, and Rima Shore. The International Dictionary of 20th Century Biography. New York: New American Library, 1987.
Dyfyniad MLAVernoff, Edward, and Rima Shore. The International Dictionary of 20th Century Biography. New American Library, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.