Lindberg, M. (1991). The resistance of Picea abies bark to Heterobasidion annosum: Role of stress, structural defence and biochemical resistance. Swedish University of Agricultural Sciences, Department of Forest Mycology and Pathology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lindberg, Mikael. The Resistance of Picea Abies Bark to Heterobasidion Annosum: Role of Stress, Structural Defence and Biochemical Resistance. Uppsala: Swedish University of Agricultural Sciences, Department of Forest Mycology and Pathology, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lindberg, Mikael. The Resistance of Picea Abies Bark to Heterobasidion Annosum: Role of Stress, Structural Defence and Biochemical Resistance. Swedish University of Agricultural Sciences, Department of Forest Mycology and Pathology, 1991.