Eccleston, Charles H., author
CRC Press, Taylor & Francis Group, 2011
Buku Teks
Ortolano, Leonard
John Wiley & Sons, 1996
Buku Teks
Eccleston, Charles H, author
CRC Press, 2012
Buku Teks
University of Illinois Press, 1978
Buku Teks
Marriot, Bety Bowers, author
McGraw-Hill, 1997
Buku Referensi