Helbing, H. (1891). Modern materia medica: For pharmacists, medical men, and students (2nd enl. ed.). The British & Colonial Druggist.
Chicago-стиль цитированияHelbing, H. Modern Materia Medica: For Pharmacists, Medical Men, and Students. 2nd enl. ed. London: The British & Colonial Druggist, 1891.
MLA-цитированиеHelbing, H. Modern Materia Medica: For Pharmacists, Medical Men, and Students. 2nd enl. ed. The British & Colonial Druggist, 1891.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.