APA (7th ed.) Citation

Mathias, M. E., & Constance, L. (1951). A revision of the Andean genus Niphogeton (Umbelliferae). University of California Press.

Chicago Style (17th ed.) Citation

Mathias, Mildred E., and Lincoln Constance. A Revision of the Andean Genus Niphogeton (Umbelliferae). Berkeley: University of California Press, 1951.

MLA (9th ed.) Citation

Mathias, Mildred E., and Lincoln Constance. A Revision of the Andean Genus Niphogeton (Umbelliferae). University of California Press, 1951.