Gardner,
F.E. 1930. The relationship between tree age and the rooting of cuttings.
Proc. Amer. Soc. Hort. Sci.26:101-104.
MissouriBotanical
Garden,
February 2001, Last Updated October 2002
Ohio
Department of Natural Resources and The Ohio State University Department
of Horticulture and Crop Science, 2002