APA (7th ed.) Citation

Correll, D. S. (1956). Ferns and fern allies of Texas. Texas Research Foundtaion.

Chicago Style (17th ed.) Citation

Correll, Donovan Stewart. Ferns and Fern Allies of Texas. Renner: Texas Research Foundtaion, 1956.

MLA (9th ed.) Citation

Correll, Donovan Stewart. Ferns and Fern Allies of Texas. Texas Research Foundtaion, 1956.

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