توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Högbom, L. (1992). Spatial and temporal variability in the use of nitrate by field-layer plants in Swedish forests. Swedish University of Agricultural Sciences, Dept..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Högbom, Lars. Spatial and Temporal Variability in the Use of Nitrate by Field-layer Plants in Swedish Forests. Umeå, Sweden: Swedish University of Agricultural Sciences, Dept., 1992.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Högbom, Lars. Spatial and Temporal Variability in the Use of Nitrate by Field-layer Plants in Swedish Forests. Swedish University of Agricultural Sciences, Dept., 1992.