(1970). Communicable disease and immunization programs hearing, Ninety-first Congress, second session ... March 13, 1970. [electronic resource].
Chicago-Zitierstil (17. Ausg.)Communicable Disease and Immunization Programs Hearing, Ninety-first Congress, Second Session ... March 13, 1970. [electronic Resource]. 1970.
MLA-Zitierstil (9. Ausg.)Communicable Disease and Immunization Programs Hearing, Ninety-first Congress, Second Session ... March 13, 1970. [electronic Resource]. 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.