Dirr, M. (1998). Manual of woody landscape plants: Their identification, ornamental characteristics, culture, propagation and uses (Fifth edition.). Stipes Pub..
Chicago Style (17th ed.) CitationDirr, Michael. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses. Fifth edition. Champaign, Ill.: Stipes Pub., 1998.
MLA (8th ed.) CitationDirr, Michael. Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses. Fifth edition. Stipes Pub., 1998.
Warning: These citations may not always be 100% accurate.