edited by Archibald A. Hill
Voice of America, 1969
Buku Teks
edited by Anne E. Baker and Kees Hengeveld
Wiley-Blackweell, 2012
Buku Teks
Aitchison, Jean, 1938-, author
Hodder & Stoughton , 1992
Buku Teks
edited by William O`Grady and Michael Dobrovolsky; U.S. edition Prepared by Mark Aronoff
St. Martin's Press, 1997
Buku Teks
Saussure, Ferdinand de, 1857-1913, author
Open Court , 1986
Buku Teks