Lambe, D., & Forkner, L. E. (2022). Now is the time for trees: Make an impact by planting the earth's most valuable resource. Timber Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lambe, Dan, و Lorene Edwards Forkner. Now Is the Time for Trees: Make an Impact by Planting the Earth's Most Valuable Resource. Portland, Oregon: Timber Press, 2022.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lambe, Dan, و Lorene Edwards Forkner. Now Is the Time for Trees: Make an Impact by Planting the Earth's Most Valuable Resource. Timber Press, 2022.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.