Cottom-Winslow, Margaret
PBC International, 1995
Buku Teks
Daniels, Klaus
Birkhauser, 1987
Buku Teks
Hartoonian, Gevork
Cambridge University Press, 1994
Buku Teks
Hartoonian, Gevork
Cambridge University Press, 1997
Buku Teks
Douglis, Evan
Taylor & Francis Group, 2009
Buku Referensi