Novia Fatma Annisa, author
2018
UI - Skripsi Membership
Carla Fitriyani Maududy, author
2017
UI - Skripsi Membership
Mitton, Maureen
John Wiley & Sons, [date of publication not identified]
Buku Teks
Mitton,Maureen
John Wiley, 1999
Buku Teks
edited by Graeme Brooker and Lois Weinthal
Bloomsbury Academic, 2013
Buku Teks SO