Gibney, Frank
Walker and Company, 1992
Buku Teks
Sutan Takdir Alisjahbana, author
Oxford University Press, 1969
Buku Teks
Schorske, Carl E.
Harvard University Press, 1955
Buku Teks
Morton, Desmond, author
Samuel Stevens, 1977
Buku Teks
Berry, R. Albert, author
Md. Johns Hopkins University Press , 1979
Buku Teks