Lyons, John, author
Cambridge University Press, 1991
eBooks
Hall, Robert A.
Anchor Books, 1960
Buku Teks
Pike, Kenneth L. (Kenneth Lee), 1912-2000, author
Mouton, 1972
Buku Teks
Holt, Rinehart and Winston, 1990
Buku Teks
edited by Dell Hymes
Harper & Row, 1966
Buku Teks