Smith, E., & Beaching. (1968). Measurement of the effectiveness of the productive unit. Institute of work study practitioners.
استشهاد بنمط شيكاغوSmith, Ewart, و Beaching. Measurement of the Effectiveness of the Productive Unit. Enfield, Middlesex: Institute of work study practitioners, 1968.
MLA استشهادSmith, Ewart, و Beaching. Measurement of the Effectiveness of the Productive Unit. Institute of work study practitioners, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.