एपीए उद्धरण

Romana, M. (2007). Underground works under special conditions: Proceedings of the Workshop (W1), Madrid, Spain, 6-7 July 2007 (Paperback). London: Taylor & Francis.

शिकागो स्टाइल उद्धरण

Romana, Manuel. Underground Works Under Special Conditions: Proceedings of the Workshop (W1), Madrid, Spain, 6-7 July 2007 (Paperback). London: Taylor & Francis, 2007.

एमएलए उद्धरण

Romana, Manuel. Underground Works Under Special Conditions: Proceedings of the Workshop (W1), Madrid, Spain, 6-7 July 2007 (Paperback). London: Taylor & Francis, 2007.