Mulyo Wibowo
Interchange center
Fakultas Teknik Universitas Indonesia, 1995
 UI - Skripsi Membership
Wallwork, Adrian
English for Presentations at International Conferences
Springer, 2010
 Buku Teks
Strutt, Peter
English for international tourism
Pearson, 2019
 Buku Teks
Cambridge international dictionary of english
editor in chief Paul Procter
Cambridge University Press, 1995
 Buku Referensi
National sovereignty and international communication
edited by Kaarle Nordenstreng and Herbert I. Schiller
Ablex, 1979
 Buku Teks