When writing the literature review, the professor warned us to rely on a tertiary source only to identify key works, and not as a substitute for examining primary or secondary materials.

Researchers mapped the underwater point sources of pollution along the estuary to identify the most critical cleanup sites.

Coastal wetlands and forests act as crucial life-sources for countless species.

The river served as the village's primary life-source, providing water, food, and fertile soil.

The scholar traced the manuscript back to the ur-source hidden in the monastery archives.

Scholars traced the myths back to several ur-sources hidden in ancient archives.

The project's open-sourceness attracted a diverse group of contributors who improved its stability.

When migrating the site, we analyzed the source domains to preserve SEO value.

When evaluating the quality of a translation, reviewers often refer back to the source text to check for omitted nuances.

The company open sourced the internal analytics tool last month to encourage collaboration.