APA (7th ed.) Citation

Terrell, E. E. (1996). Revision of Houstonia (Rubiaceae-Hedyotideae). American Soc. of Plant Taxonomists.

Chicago Style (17th ed.) Citation

Terrell, Edward E. Revision of Houstonia (Rubiaceae-Hedyotideae). Ann Arbor, Mich: American Soc. of Plant Taxonomists, 1996.

MLA (9th ed.) Citation

Terrell, Edward E. Revision of Houstonia (Rubiaceae-Hedyotideae). American Soc. of Plant Taxonomists, 1996.