Mallery, Garrick
Mouton, 1972
Buku Teks
Taub, Sarah F.
Cambridge University Press , 2001
Buku Teks
Sianipar, Igor Lestin author
Fakultas Ilmu Komputer Universitas Indonesia, 2021
UI - Skripsi (Membership)
edited by Diane Brentari
Cambridge University Press, 2010
eBooks
Stokoe, William C.
Mouton, 1972
Buku Teks