APA (7th ed.) Citation

Lincoln, C., & S, A. W. A second species of Cotopaxia (Umbelliferae/ Apiaceae), from Colombia A second species of Cotopaxia (Umbelliferae/ Apiaceae), from Colombia. Universidad Nacional de Colombia.

Chicago Style (17th ed.) Citation

Lincoln, Constance, and Alverson William S. A Second Species of Cotopaxia (Umbelliferae/ Apiaceae), from Colombia A Second Species of Cotopaxia (Umbelliferae/ Apiaceae), from Colombia. Universidad Nacional de Colombia.

MLA (9th ed.) Citation

Lincoln, Constance, and Alverson William S. A Second Species of Cotopaxia (Umbelliferae/ Apiaceae), from Colombia A Second Species of Cotopaxia (Umbelliferae/ Apiaceae), from Colombia. Universidad Nacional de Colombia.

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