How to Cite the WLS Data Properly

Acknowledgment Text for Use of WLS Data

This research uses data from the Wisconsin Longitudinal Study (WLS) of the University of Wisconsin-Madison. Since 1991, the WLS has been supported principally by the National Institute on Aging (AG-9775, AG-21079, AG-033285, and AG-041868), with additional support from the Vilas Estate Trust, the National Science Foundation, the Spencer Foundation, and the Graduate School of the University of Wisconsin-Madison. Since 1992, data have been collected by the University of Wisconsin Survey Center. A public use file of data from the Wisconsin Longitudinal Study is available from the Wisconsin Longitudinal Study, University of Wisconsin-Madison, 1180 Observatory Drive, Madison, Wisconsin 53706 and at The opinions expressed herein are those of the authors.

Bibliographic Citations

Electronic resources are well established as a means of information dissemination. The purpose of making a reference to an electronic resource is to give enough information so that it can be located as well as acknowledge those authors whose intellectual works are in electronic format.

Users of these data are requested to cite them properly. Below is an example of proper citation for these works. You should consult a proper style manual and modify the examples to maintain consistency in punctuation and typeface.

Citing the Official Release Data

Wisconsin Longitudinal Study (WLS) [graduates, siblings, and spouses]: 1957-2017 Version 13.06. [machine-readable data file] / Hauser, Robert M., William H. Sewell, and Pamela Herd. [principal investigator(s)]. Madison, WI: University of Wisconsin-Madison, WLS. [distributor]; <>

To summarize the data we suggest you cite this article in your research.

Herd, Pamela, Deborah Carr, and Carol Roan. 2014. "Cohort Profile: Wisconsin Longitudinal Study (WLS)." International Journal of Epidemiology 43:34-41 PMCID: PMC3937969