توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Šlapokas, T. (1991). Influence of litter quality and fertilization on microbial nitrogen transformations in short-rotation forests. Swedish University of Agricultural Sciences, Dept. of Microbiology.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Šlapokas, Tommy. Influence of Litter Quality and Fertilization on Microbial Nitrogen Transformations in Short-rotation Forests. Uppsala: Swedish University of Agricultural Sciences, Dept. of Microbiology, 1991.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Šlapokas, Tommy. Influence of Litter Quality and Fertilization on Microbial Nitrogen Transformations in Short-rotation Forests. Swedish University of Agricultural Sciences, Dept. of Microbiology, 1991.