Sign language and linguistic universals / Wendy Sandler, Diane Lillo-Martin
Cambridge University Press, 2006
 eBooks
Linguistic universals / edited by Ricardo Mairal and Juana Gil
Cambridge University Press, 2006
 eBooks
Universals in linguistic theory
Holt, Rinehart and Winston, 1968
 Buku Teks
Greenberg, Joseph H. (Joseph Harold), 1915-2001
Language universals with special reference to feature hierarchies
Mounton, 1976
 Buku Teks
Hawkins, John A.
Explaining language / edited by John A. Hawkins
Basil Black Well , 1988
 Buku Teks