Alexander, Renee R.
Wiley-Liss, 1992
Buku Teks
editor, A.E. Pegg
Portland Press, 1995
Buku Referensi
Pegg, A.E.
Portland Press, 1994
Buku Referensi
Klotz, Irving M.
Academic Press , 1967
Buku Teks
Gerhard Michal, Dietmar Schomburg, editors
Wiley, 2012
Buku Teks