Eastwood, John
English for travel
Oxford University Press, 1994
 Buku Teks
Socio-cultural constraints of educated womens participation in overseas training some Indonesian cases
PPT-LIPI, 1992
 Buku Teks
Josefine Yaputri
Perempuan Indonesia penulis travel blog berbahasa inggris = Indonesian women writers of travel blogs in english
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2014
 UI - Skripsi Membership
Kruse, Benedict
Instrumental English English for the travel industry
McGraw-Hill, 1982
 Buku Teks SO
Hasibuan, Sofia
English for specific purposes : economics
Gramedia, 1986
 Buku Teks