Florence D. Hudson, editor
Springer Nature Switzerland, 2019
eBooks
Unger, Rhoda Kesler, author
McGraw-Hill, Inc, 1992
Buku Teks
Okke Saleha K. Sumantri Zaimar, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1997
UI - Laporan Penelitian
Awatiful Azza, author
Universitas Indonesia, 2009
UI - Tesis (Open)
Edited, Suzanne Ferriss, Mallory Young
Routledge, 2006
Buku Teks