Lubkemann, C. (2010). Tree craft. Fox Chapel Pub. Company.
Cita Chicago Style (17a ed.)Lubkemann, Chris. Tree Craft. East Petersburg, PA: Fox Chapel Pub. Company, 2010.
Cita MLA (8a ed.)Lubkemann, Chris. Tree Craft. Fox Chapel Pub. Company, 2010.
Precaución: Estas citas no son 100% exactas.