Scherer, S., Kerfin, W., & Böger, P. (1980). Increase of Nitrogenase Activity in the Blue-Green Alga Nostoc muscorum (Cyanobacterium).
استشهاد بنمط شيكاغوScherer, Siegfried, Wolfgang Kerfin, و Peter Böger. Increase of Nitrogenase Activity in the Blue-Green Alga Nostoc Muscorum (Cyanobacterium). 1980.
MLA استشهادScherer, Siegfried, Wolfgang Kerfin, و Peter Böger. Increase of Nitrogenase Activity in the Blue-Green Alga Nostoc Muscorum (Cyanobacterium). 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.