http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hướng dẫn thực hành về nền và móng
Viện tiêu chuẩn Anh ( BSI ) ; Phạm Xuân, Vương Văn Thành, Nguyễn Anh Minh ( người dịch )
Underground engineering,Kỹ thuật ngầm