Spaun, J., Bentzon, M. W., Larsen, S. Olesen & Hewitt, L. F.(1961). International Standard for Antistreptolysin-O. Bulletin of the World Health Organization, 24 (2), 271 - 279. https://apps.who.int/iris/handle/10665/267357
Journal
Bulletin of the World Health Organization, 24 (2): 271 - 279
