Parapat, Hisar Renhard P.
Fakultas Teknik Universitas Indonesia, 2002
UI - Skripsi Membership
Irga Abdulrahman
2017
UI - Tesis Membership
Hearnshaw, Leslie Spencer
Routledge , 1989
Buku Teks
Herrick, James A.
Pearson custom, 1998
Buku Teks
Bashir, Sajitha
The World Bank, 2009
Buku Teks