Will, Clifford M., 1946-, author
Cambridge University Press, 1981
Buku Teks
Finster, Felix, editor
[Springer, ], 2012
eBooks
Siregar, Hasrianti, author
2016
UI - Skripsi (Membership)
M. Syamsul Hadi, author
Universitas Indonesia, 2001
UI - Skripsi (Membership)
Adzilah Shahna Rosyadi, author
2018
UI - Skripsi (Membership)