Neal, Larry, author
UK Cambridge University Press, 2015
Buku Teks
Brinkley, Alan, author
McGraw-Hill, 1997
Buku Referensi
Palmer, R.R. (Robert Roswell), 1909-2002, author
Alfred A. Knopf, 1967
Buku Teks
Palmer, R.R. (Robert Roswell), 1909-2002, author
Alfred A. Knopf, 1983
Buku Teks
Palmer, R.R. (Robert Roswell), 1909-2002, author
Alfred A. Knopf, 1971
Buku Teks