1. Turner, J.: Reckoning with the beast. The Johns Hopkins University Press, Baltimore (1980), p. 115, ISBN 0-8018-2399-4.
2. Prigge, R.: Diphtherie-Schutzimpfungen mit hochactiven Impfstof. (Diphtheria vaccination with highly active vaccines.) Ergebnisse der Hygiene, (1939), 22, 1–63.
3. Ramshorst, J.D. van and Ehrengut, E.: Diphtherieschutzimpfung (Diphtheria vaccination, in the book entitled Handbuch der Schutzimpfungen (Vaccination Manual) by Herrlich, A., (1965), p. 394, Springer Verlag, Berlin.
4. Parish, H.J.: A history of immunization. E and S Livingstone Ltd., Edinburgh/London, 1965.
5. Guye.: Ned. Tijdschrift v. Geneeskunde (1889), II, 13, p.435.