[publisher not identified], [date of publication not identified]
Buku Teks
Ratih Dewi, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2008
UI - Skripsi (Open)
Rosnow, Ralph L., author
Wadsworth, 1992
Buku Teks
Thomas, Elizabeth Marshall, 1931-, author
Tian Xia Wenhua Chuban Gufen Youxian Gongsi, 1996
Buku Teks
Fakultas Teknik Universitas Indonesia, 2000
UI - Tugas Akhir