Horner, Joseph Gregory, author
Oxford & IBH Publishing, 1967
Buku Referensi
Zhongguo Dabai Kequanshu Chubanshe, 1998
Buku Referensi
editor, Rudolf Walther
Pergamon Press, 1972
Buku Referensi
Thrush, Paul W., author
U.S. Dept. of the Interior, 1968
Buku Referensi
Simanjuntak, Herpinus, author
Kesaint Blanc, 2012
Buku Referensi