Gray, Charlotte, author
Gramedia Pustaka Utama, 1994
Buku Teks
Vardey, Lucinda
Gramedia Pustaka Utama, 1997
Buku Teks
Devinita Ayu Nurcahyani, author
Universitas Indonesia, 2013
Artikel Jurnal
Langford, Joseph, author
Gramedia Pustaka Utama, 2010
Buku Teks
Kang Maman, author
Diva Press, 2020
Buku Teks