Fell, D. (2011). Vertical gardening: Grow up, not out, for more vegetables and flowers in much less space. Rodale.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Fell, Derek. Vertical Gardening: Grow Up, Not Out, for More Vegetables and Flowers in Much Less Space. Emmaus, Pa.: Rodale, 2011.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Fell, Derek. Vertical Gardening: Grow Up, Not Out, for More Vegetables and Flowers in Much Less Space. Rodale, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.