World Tribology Congress London, England, & Institution of Mechanical Engineers. Tribology Group. (1997). Abstracts of papers from: World Tribology Congress, 8-12 September 1997. Mechanical Engineering Publications for the Institution of Mechanical Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Tribology Congress London, England, و Institution of Mechanical Engineers. Tribology Group. Abstracts of Papers from: World Tribology Congress, 8-12 September 1997. Bury St Edmunds: Mechanical Engineering Publications for the Institution of Mechanical Engineers, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)World Tribology Congress London, England, و Institution of Mechanical Engineers. Tribology Group. Abstracts of Papers from: World Tribology Congress, 8-12 September 1997. Mechanical Engineering Publications for the Institution of Mechanical Engineers, 1997.