McClain, John O., author
Prentice-Hall, 1992
Buku Teks
edited by Fritz Enderlein
Oceana Publications, 1992
Buku Referensi
Whaley, Douglas J.
Harcourt Brace & Company, 1992
Buku Teks
Seiler, Thorben, author
[Springer, ], 2012
eBooks
Asri Rahimi, author
Universitas Indonesia, 2014
UI - Skripsi (Membership)