Brace, C. Loring, author
Macmillan, 1969
Buku Teks
Trident Press, [Date of publication not identified]
Buku Referensi
Hewitt, Paul G., author
Pearson - Addison Wesley, 2008
Buku Teks
Trewartha, Glenn T., author
McGraw-Hill, 1967
Buku Teks
Fakultas Teknik Universitas Indonesia, 1995
UI - Skripsi Membership