APA (7th ed.) Citation

Northington, D. K. (1974). Systematic studies of the genus Pyrrhopappus (Compositae, Cichorieae). Texas Tech Press.

Chicago Style (17th ed.) Citation

Northington, David K. Systematic Studies of the Genus Pyrrhopappus (Compositae, Cichorieae). Lubbock: Texas Tech Press, 1974.

MLA (9th ed.) Citation

Northington, David K. Systematic Studies of the Genus Pyrrhopappus (Compositae, Cichorieae). Texas Tech Press, 1974.

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