Hall, C. Michael
Pearson Education Limited, 2000
Buku Teks
Yandi Andri Yatmo
Fakultas Teknik Universitas Indonesia, 2007
UI - Laporan Penelitian
edited by David M. Dunham, Jos G.M. Hilhorst
Mouton, 1971
Buku Teks
Gilbert, Neil
Prentice-Hall, 1977
Buku Teks
Mouton, 1977
Buku Teks