Jacobs, Hayes B.
Writer`s Digest Books, 1968
Buku Teks
Lester, James D. Sr., 1935-2006
Pearson, 2015
Buku Teks
Lester, James D. Sr., 1935-2006
Pearson, 2015
Buku Teks
Mahmoud, Shah
Betterway, 1992
Buku Referensi
Meyer, Michael
Little, Brown, 1982
Buku Teks