Sufrin, S. C., & Sedgwick, R. C. (1956). Labour economics and problems at mid-century. Alfred A Knopf.
استشهاد بنمط شيكاغوSufrin, Sidney C., و Robert C. Sedgwick. Labour Economics and Problems at Mid-century. New Yourk: Alfred A Knopf, 1956.
MLA استشهادSufrin, Sidney C., و Robert C. Sedgwick. Labour Economics and Problems at Mid-century. Alfred A Knopf, 1956.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.