edited by Bernard Comrie
Routledge, 1991
Buku Referensi
Campbell, George L., author
Routledge, 1995
Buku Referensi
Campbell, George L., author
Routledge, 1998
Buku Teks
Stokoe, William C., author
Mouton, 1972
Buku Teks
Appleby, Doris, author
McGraw-Hill, 1991
Buku Teks