Ahrens, W. (1999). Retrospective assessment of occupational exposure in case control studies: Development, evaluation and comparison of different methods. Ecomed.
Chicago-Zitierstil (17. Ausg.)Ahrens, Wolfgang. Retrospective Assessment of Occupational Exposure in Case Control Studies: Development, Evaluation and Comparison of Different Methods. Landsberg: Ecomed, 1999.
MLA-Zitierstil (9. Ausg.)Ahrens, Wolfgang. Retrospective Assessment of Occupational Exposure in Case Control Studies: Development, Evaluation and Comparison of Different Methods. Ecomed, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.