Humphrey, C. (1929). Timber storage conditions in the eastern and southern states with reference to decay problems. United States Government Printing Office.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Humphrey, C.J. Timber Storage Conditions in the Eastern and Southern States with Reference to Decay Problems. Washington: United States Government Printing Office, 1929.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Humphrey, C.J. Timber Storage Conditions in the Eastern and Southern States with Reference to Decay Problems. United States Government Printing Office, 1929.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.