Hobson, J. (2011). The art of creative pruning: Inventive ideas for training and shaping trees and shrubs. Timber Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hobson, Jake. The Art of Creative Pruning: Inventive Ideas for Training and Shaping Trees and Shrubs. Portland, Or.: Timber Press, 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hobson, Jake. The Art of Creative Pruning: Inventive Ideas for Training and Shaping Trees and Shrubs. Timber Press, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.