Cruz de León, G. (2016). A general sectional volume equation for classical geometries of tree stem. Instituto de Ecología, A.C.
Lua i Stíl Chicago (17ú heag.)Cruz de León, Gildardo. A General Sectional Volume Equation for Classical Geometries of Tree Stem. Instituto de Ecología, A.C, 2016.
Lua MLA (9ú heag.)Cruz de León, Gildardo. A General Sectional Volume Equation for Classical Geometries of Tree Stem. Instituto de Ecología, A.C, 2016.