Não informado. (1921). Bulletin of the Lloyd Library and Museum of the Botany, Pharmacy and Materia Medica. Lloyd Library and Museum.
Chicago-referens (17:e uppl.)Não informado. Bulletin of the Lloyd Library and Museum of the Botany, Pharmacy and Materia Medica. Cincinnati, Ohio: Lloyd Library and Museum, 1921.
MLA-referens (8:e uppl.)Não informado. Bulletin of the Lloyd Library and Museum of the Botany, Pharmacy and Materia Medica. Lloyd Library and Museum, 1921.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.