Mey, Jacob.
Blackwel, 1993
Buku Teks
Nababan, P. W. J., author
Gramedia, 1991
Buku Teks
Sumarsono, author
Pustaka Pelajar, 2007
Buku Teks
Fishman, Joshua A.
Newbury House Publishers, 1972
Buku Teks
1972, The Hague Mouton
Buku Teks
Bram, Joseph
Random House , 1955
Buku Teks