توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Ohmann, L. F., & Grigal, D. F. (1979). Early revegetation and nutrient dynamics following the 1971 Little Sioux Forest fire in Northeastern Minnesota. Society of American Foresters.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Ohmann, Lewis F., و David F. Grigal. Early Revegetation and Nutrient Dynamics Following the 1971 Little Sioux Forest Fire in Northeastern Minnesota. Washington: Society of American Foresters, 1979.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Ohmann, Lewis F., و David F. Grigal. Early Revegetation and Nutrient Dynamics Following the 1971 Little Sioux Forest Fire in Northeastern Minnesota. Society of American Foresters, 1979.