United States Department of Health and Human Services. National Center for Health Statistics. (1993). National Ambulatory Medical Care Survey, 1990. [Verlag nicht ermittelbar]. https://doi.org/10.3886/ICPSR09831.v1
Chicago-Zitierstil (17. Ausg.)United States Department of Health and Human Services. National Center for Health Statistics. National Ambulatory Medical Care Survey, 1990. [Erscheinungsort nicht ermittelbar]: [Verlag nicht ermittelbar], 1993. https://doi.org/10.3886/ICPSR09831.v1.
MLA-Zitierstil (9. Ausg.)United States Department of Health and Human Services. National Center for Health Statistics. National Ambulatory Medical Care Survey, 1990. [Verlag nicht ermittelbar], 1993. https://doi.org/10.3886/ICPSR09831.v1.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.