Bickham, George
The universal penman
P. A. Struck, 1941
 Buku Referensi
Hankes, Elmer Joseph
A universal second language
Hankes Foundation, 1992
 Buku Teks SO
Wechler, Wolfgang
Universal algebra for computer scientists
Springer-Verlag , 1992
 Buku Teks
Kaelany H.D.
Islam agama universal
Midada Rahma Press, 2006
 Buku Teks
Arthur, Paul, 1924-
PictograficSystems: nonverbal, universal
Focus Strategic Communications, 2005
 Buku Teks