Simsir, Bilal N.
The Turks of Bulgaria (1878-1985) / Bilal N. Simsir
K. Rustem , 1988
 Buku Teks
R. Vassilev
Sociology in Bulgaria
Publishing House of the Bulgaria, 1970
 Buku Teks
Konstitusi Bulgaria
editor, S. Prajudi Atmosudirdjo ...[et al.]
Ghalia Indonesia, 1987
 Buku Teks
The cultural development of Bulgaria
Foreign Language Press, 1959
 Buku Teks
Popov, Kostadin
Cultural policy in Bulgaria
Unesco Press, 1981
 Buku Teks