Robinson, O. Preston
Prentice Hall Inc., 1959
Buku Teks
Hartzler, FE
hratara KArya Aksara, 1982
Buku Teks
Fernald, Charles H., author
Prentice-Hall, 1959
Buku Teks
Kirkpatrick, Charles A., author
South-Western Publishing, 1976
Buku Teks
Fakultas Teknik Universitas Indonesia, 2012
UI - Skripsi (Open)