An analysis of types of presupposition in TIME magazine advertisement
 Artikel Jurnal
Sali Gobal
Manuk
Departemen Pendidikan dan Kebudayaan RI, 1979
 Koleksi Publik
Sali Gobal
Manuk
Departemen Pendidikan dan Kebudayaan RI, 1979
 Buku Teks
Tanaka, Sen`o
The tea ceremony
Kodansha International, 1974
 Buku Teks
Goody, Esther N
Question and politeness
Cambridge University Press, 1978
 Buku Teks