एपीए उद्धरण

Institution of Mechanical Engineers. (1973). First European tribology congress. I M E.

शिकागो स्टाइल उद्धरण

Institution of Mechanical Engineers. First European Tribology Congress. London: I M E, 1973.

एमएलए उद्धरण

Institution of Mechanical Engineers. First European Tribology Congress. I M E, 1973.