Hartman, B., & Gerigscott, E. (2015). The lean farm: How to minimize waste, increase efficiency, and maximize value and profits with less work. Chelsea Green Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hartman, Ben, و Emma Gerigscott. The Lean Farm: How to Minimize Waste, Increase Efficiency, and Maximize Value and Profits with Less Work. White River Junction, Vermont: Chelsea Green Publishing, 2015.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Hartman, Ben, و Emma Gerigscott. The Lean Farm: How to Minimize Waste, Increase Efficiency, and Maximize Value and Profits with Less Work. Chelsea Green Publishing, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.