Peter de Ridder Press , 1975
Buku Teks
Esser, J., editor
Narr, 1981
Buku Teks
Departement of Language and Linguistics University of Essex , 1983
Buku Teks
Pike, Kenneth L. (Kenneth Lee), 1912-2000, author
Mouton, 1972
Buku Teks
Basic Books, 1969
Buku Teks