Wagner, W. L. (2004). RESURRECTION OF A LITTLE-KNOWN SPECIES OF OENOTHERA SECT. OENOTHERA IN NORTHEASTERN MEXICO (TRIBE ONAGREAE: ONAGRACEAE). Zenodo.
Chicago-Zitierstil (17. Ausg.)Wagner, Warren Lambert. RESURRECTION OF A LITTLE-KNOWN SPECIES OF OENOTHERA SECT. OENOTHERA IN NORTHEASTERN MEXICO (TRIBE ONAGREAE: ONAGRACEAE). Zenodo, 2004.
MLA-Zitierstil (9. Ausg.)Wagner, Warren Lambert. RESURRECTION OF A LITTLE-KNOWN SPECIES OF OENOTHERA SECT. OENOTHERA IN NORTHEASTERN MEXICO (TRIBE ONAGREAE: ONAGRACEAE). Zenodo, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.