La Salle Extension University, Diemer, H., Bloomfield, M., Bloomfield, D., & Dahm, E. F. (1921). The foreman and his job: The first work manual of the Modern foremanship course, being the expression of practical foremen. La Salle extension University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)La Salle Extension University, Hugo Diemer, Meyer Bloomfield, Daniel Bloomfield, و Everett Francis Dahm. The Foreman and His Job: The First Work Manual of the Modern Foremanship Course, Being the Expression of Practical Foremen. Chicago: La Salle extension University, 1921.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)La Salle Extension University, et al. The Foreman and His Job: The First Work Manual of the Modern Foremanship Course, Being the Expression of Practical Foremen. La Salle extension University, 1921.