Langford, Joseph, author
Gramedia Pustaka Utama, 2010
Buku Teks
Grote, Jim
Kanisius, 2002
Buku Teks
Trobisch, Walter
Yayasan Komunikasi Bina Kasih/OMF, 1986
Buku Teks
Reeb, Lloyd
Metanoia Publishing, 2007
Buku Teks
Athaya Rizky Budiman, author
2017
UI - Skripsi (Membership)