APA (7th ed.) Citation

Olsen, S. (2007). Encyclopedia of garden ferns. Timber Press.

Chicago Style (17th ed.) Citation

Olsen, Sue. Encyclopedia of Garden Ferns. Portland, Or.: Timber Press, 2007.

MLA (8th ed.) Citation

Olsen, Sue. Encyclopedia of Garden Ferns. Timber Press, 2007.

Warning: These citations may not always be 100% accurate.