The Cite This Study link in the image above is provided for every ICPSR dataset. When you follow that link, the complete citation is presented in a pop-up window along with the format used (as shown in the image below). Capture the citation using copy/paste or use the links provided to export the citation to a citation management software program.
When viewing iPOLL Question Details, scroll past the data chart to view the data sources notes. Clicking the View Citation link will bring the complete, formal citation into view.
When viewing a Roper dataset abstract the citation is provided, as shown below.
Paste the dataset DOI into the CrossCite tool to generate a citation. Select the style needed from the pulldown menu. Copy/Paste the citation into your document/email. [NOTE: Compare the citation below to that provided by ICPSR in the box above]