Carcio, Helen A., author
Lippincott , 1999
Buku Teks
Maegraith, B.G., author
The English Language Book Society, 1971
Buku Teks
Pisani, Margaret, editor
Springer, 2012
eBooks
Ignatius B. Prasetya, author
University of Indonesia. Faculty of Medicine, 2017
Artikel Jurnal
Nur Eni Lestari, author
2017
UI - Tugas Akhir