Gusti Warman, author
Fakultas Teknik Universitas Indonesia, 2021
UI - Tesis Membership
Park, Chris, author
Oxford University Press, 2008
Buku Referensi
Panjaitan, Pohan, author
Universitas HKBP Nonmensen, 2016
Artikel Jurnal
Julia Diaz Hidayati, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2021
UI - Skripsi (Membership)
Craig, R.F. (Robert F.), author
Chapman & Hall , 1992
Buku Teks