Easton, V., & Koch, J. (2009). The new low-maintenance garden: How to have a beautiful, productive garden and the time to enjoy it. Timber Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Easton, Valerie, و Jacqueline Koch. The New Low-maintenance Garden: How to Have a Beautiful, Productive Garden and the Time to Enjoy It. Portland, Or.: Timber Press, 2009.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Easton, Valerie, و Jacqueline Koch. The New Low-maintenance Garden: How to Have a Beautiful, Productive Garden and the Time to Enjoy It. Timber Press, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.