Tucker, Allen B.
Programming languages
McGraw-Hill, 1986
 Buku Teks SO
Tucker, Allen B.
Programming languages
McGraw-Hill, 1977
 Buku Teks SO
The Uralic languages
edited by Daniel Abondolo
Routledge, 1998
 Buku Teks SO
Katzner, Kenneth
The languages of the world
Routledge, 1995
 Buku Referensi
The Slavonic languages
edited by Bernard Comrie and Greville G. Corbett
Routledge, 1993
 Buku Teks SO