Nidya Sari Rifaie, author
2016
UI - Skripsi (Membership)
Spilsbury, Sallie
Cavendish Publishing Limited, 1998
Buku Teks
O`Guinn, Thomas C., author
CT Cengage Learning, 2015
Buku Teks
Artikel Jurnal
Sharfina Jasmine, author
2017
UI - Skripsi (Membership)