Dyfyniad APA

Burkhauser, R. V., & Gertler, P. J. (1995). The Health and retirement study: Data quality and early results. The University of Wisconsin Press.

Dyfyniad Arddull Chicago

Burkhauser, Richard V., and Paul J. Gertler. The Health and Retirement Study: Data Quality and Early Results. Madison, WI: The University of Wisconsin Press, 1995.

Dyfyniad MLA

Burkhauser, Richard V., and Paul J. Gertler. The Health and Retirement Study: Data Quality and Early Results. The University of Wisconsin Press, 1995.

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