Buku Teks
Seach, Diana, author
Routledge , 2007
Buku Teks
edited by Doreen Granpeesheh, Jonathan Tarbox, Adel C. Naddowski, Julie Kornack
Academic Press, 2014
eBooks
Howlin, Patricia, author
John Wiley & Sons, 1998
Buku Teks
Sansiviera Mediana Sari, author
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2019
UI - Tesis (Membership)