Jones, Robert P. (Robert Patrick), author
Simon & Schuster Paperbacks, 2017
Buku Teks
Winkler, Christian
Georg Westermann, 1961
Buku Teks
Metford, J.C.J., author
Thames and Hudson, 1983
Buku Referensi
Foster, David
Penguin Books, 1986
Buku Teks
Crumlish, Christian
BPB Publications, 1995
Buku Referensi