When writing with sources, it’s important not to simply summarize or paraphrase the sources. You need to use the sources to strengthen your own argument. One easy way to make sure the sources are working for you is to include a sentence or two of explanation or commentary with each quote. You might use a lead-in sentence, so your readers know what to look for, as is demonstrated below:

Even without a service learning requirement, today’s youth have shown that they are enthusiastic about serving the community. Howe and Strauss indicate that five out of six Millennials “believe their generation has the greatest duty to improve the environment” and would accept additional “civic duties” to bring about needed change.

Alternatively, you might follow a quote with a sentence or two of commentary to remind readers of your point and how the quote reinforces it, as you see here:

The Dalton School, a small private high school, phrases it hopefully in the mission statement, which speaks of “empowering” students and “situating our moral center.” It continues on to argue (rather ominously) that “we must engage in community service because . . . we need our communities to survive.” The strong goals stated in this argument are certainly attractive, but their loftiness seems far removed from what a student might practically aim to achieve. In this regard, the Dalton School’s teaching goals are admirable but impractical because they seem to forget the individual student.

And, of course, be careful not to represent ideas or words as your own if they are not: give credit where it is due!