edited by Howard Nemerov
Basic Books, 1966
Buku Teks
Dembo, L.S.
University of California Press, 1966
Buku Teks
Horner, Avril
Harvester Wheatshea, 1990
Buku Teks
Kazin, Alfred, 1915-
Harcourt Brace Jovanovich, 1970
Buku Teks
edited by Ronald Baughman
Gale Reserach , 1986
Buku Referensi