Humphrey, C. (1929). Timber storage conditions in the eastern and southern states with reference to decay problems. United States Government Printing Office.
Cita Chicago (17th ed.)Humphrey, C.J. Timber Storage Conditions in the Eastern and Southern States with Reference to Decay Problems. Washington: United States Government Printing Office, 1929.
Cita MLA (9th ed.)Humphrey, C.J. Timber Storage Conditions in the Eastern and Southern States with Reference to Decay Problems. United States Government Printing Office, 1929.
Atenció: Aquestes cites poden no estar 100% correctes.