Mitchell, P., & Kirby, K. (1989). Ecological effects of forestry practices in long-established woodland and their implications for nature conservation. Oxford Forestry Institute, University of Oxford.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Mitchell, P., و K. Kirby. Ecological Effects of Forestry Practices in Long-established Woodland and Their Implications for Nature Conservation. Oxford Forestry Institute, University of Oxford, 1989.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Mitchell, P., و K. Kirby. Ecological Effects of Forestry Practices in Long-established Woodland and Their Implications for Nature Conservation. Oxford Forestry Institute, University of Oxford, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.