Holmes, R., & Marshall, D. (2007). Northwest home landscaping: Including Western British Columbia (New ed.). Creative Homeowner.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Holmes, Roger, و Don Marshall. Northwest Home Landscaping: Including Western British Columbia. New ed. Upper Saddle River, N.J.: Creative Homeowner, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Holmes, Roger, و Don Marshall. Northwest Home Landscaping: Including Western British Columbia. New ed. Creative Homeowner, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.