I suggest that you cite it as a source. In the citation, include the publication details so others might be able to find a copy, and indicate that the genealogy does not cite its sources. It's not a high-quality source, but pedigrees like the one you describe often are based (at least in part) on firsthand memories and records such as family bibles, so they can have valid information that may not be available anywhere else -- and they are usually a good place to start.
Clearly indicate which facts in the profiles came from this publication. After that, try to find records that support your information -- and if you find contradictory information, document the contradictions, and be prepared to reject some of your family member's information.