Crabbe, J. A., Jermy, A. C., & Thomas, B. A. (1973). The phylogeny and classification of the ferns. Koeltz Scientific Press.
Chicago Style (17th ed.) CitationCrabbe, J. A., A. C. Jermy, and B. A. Thomas. The Phylogeny and Classification of the Ferns. Koenigstein: Koeltz Scientific Press, 1973.
MLA (8th ed.) CitationCrabbe, J. A., et al. The Phylogeny and Classification of the Ferns. Koeltz Scientific Press, 1973.
Warning: These citations may not always be 100% accurate.
