Olsen, S. (2007). Encyclopedia of garden ferns. Timber Press.
Chicago Style (17th ed.) CitationOlsen, Sue. Encyclopedia of Garden Ferns. Portland, Or.: Timber Press, 2007.
MLA (8th ed.) CitationOlsen, Sue. Encyclopedia of Garden Ferns. Timber Press, 2007.
Warning: These citations may not always be 100% accurate.