Herrick, M. (1967). Mechanical hydraulic and pneumatic fundamentals and components: Machine control and control systems. Society of Manufacturing Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Herrick, Merlyn. Mechanical Hydraulic and Pneumatic Fundamentals and Components: Machine Control and Control Systems. Houston, Texas: Society of Manufacturing Engineers, 1967.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Herrick, Merlyn. Mechanical Hydraulic and Pneumatic Fundamentals and Components: Machine Control and Control Systems. Society of Manufacturing Engineers, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.