Peterson, Philip L.
Mouton, 1973
Buku Teks
Brian Prama Krisnanda, author
Fakultas Teknik Universitas Indonesia, 2005
UI - Skripsi (Membership)
White, James J., author
West Publishing Company, 1995
Buku Teks
White, James J., author
West Publishing Company, 1988
Buku Teks
Arum Dwi Rahmi, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2006
UI - Skripsi (Membership)