Colleen didn’t have a lot of time to conduct her marketing research, so she went to the library to see what data she could find from available sources. Colleen is using data sources for her research.

Colleen is using secondary data sources for her research.

Explanation:

A form of source of information, where an investigator includes data which another researcher has already obtained and analyzed, thus understood as "secondary data source".

In this method of data gathering the study is based on contrasting a variable to source information using the internet or books, rather than testing the variable. Since Colleen went to the library and online source of information from books, she used the secondary source of data. The primary source of data is when the investigator has gathered all data from the analysis of a variable.

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