APA-referens (7:e uppl.)
Smith, C. E. (1976). Modern vegetation and ancient plant remains of the Nochixtlan Valley, Oaxaca. Vanderbilt University.
Chicago-referens (17:e uppl.)
Smith, C. Earle. Modern Vegetation and Ancient Plant Remains of the Nochixtlan Valley, Oaxaca. Nashville, Tennessee: Vanderbilt University, 1976.
MLA-referens (9:e uppl.)
Smith, C. Earle. Modern Vegetation and Ancient Plant Remains of the Nochixtlan Valley, Oaxaca. Vanderbilt University, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.