Unknown. (2023). Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Unknown. Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute, 2023.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Unknown. Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute, 2023.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.