Institution of Production Engineers (Great Britain). (1970). Index by component configuration, giving guidance on selection of hopper feeders, orientating mechanisms, escapements and placememt mechanisms. Institution of Production Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Institution of Production Engineers (Great Britain). Index by Component Configuration, Giving Guidance on Selection of Hopper Feeders, Orientating Mechanisms, Escapements and Placememt Mechanisms. London: Institution of Production Engineers, 1970.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Institution of Production Engineers (Great Britain). Index by Component Configuration, Giving Guidance on Selection of Hopper Feeders, Orientating Mechanisms, Escapements and Placememt Mechanisms. Institution of Production Engineers, 1970.