Fridén, L. (1972). Instability in the international steel market: A study of import and export fluctuations. Stockholm: Beckmans.
استشهاد بنمط شيكاغوFridén, Lennart. Instability in the International Steel Market: A Study of Import and Export Fluctuations. Stockholm: Beckmans, 1972.
MLA استشهادFridén, Lennart. Instability in the International Steel Market: A Study of Import and Export Fluctuations. Stockholm: Beckmans, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.