Oborn, I. (1994). Morphology, chemistry, mineralogy and fertility of some acid sulfate soils in Sweden. Swenden: Swedish University of Agricultural Sciences.
استشهاد بنمط شيكاغوOborn, Ingrid. Morphology, Chemistry, Mineralogy and Fertility of Some Acid Sulfate Soils in Sweden. Swenden: Swedish University of Agricultural Sciences, 1994.
MLA استشهادOborn, Ingrid. Morphology, Chemistry, Mineralogy and Fertility of Some Acid Sulfate Soils in Sweden. Swenden: Swedish University of Agricultural Sciences, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.