Kemala Andiyani, author
Fakultas Ilmu Komputer Universitas Indonesia , 2020
UI - Skripsi (Membership)
University Oxford Press , 1984"
Buku Teks
Yates, Frank
Macmillan Publishing Co., 1981
Buku Teks
George Allen and Unwin, 1985
Buku Teks
Dillman, Don A., author
John Wiley & Sons, 2000
Buku Teks