No matter who your students are, be explicit about your expectations surrounding information literacy. What is a credible source? What is scholarly? Do you want them to engage in conversations within your field? Do you want them to confront bias?
Don't expect students to investigate the credibility of sources or to engage each other in the research process unless you ask them to.
Here is one approach that we use in assignments and in library sessions to get students to confront these issues when evaluating sources. Work with a librarian to adapt it to your goals, whether it be an in class activity or as a portion of an annotated bibliography: Source Analysis Worksheet. Librarians like assessing things - work with us to assess research skills on an assignment or activity.