The phrase "a small source of" is correct and usable in written English.
It can be used to describe a minor origin or contributor of something, often in contexts related to information, resources, or influences.
Example: "The study identified a small source of error in the data collection process that affected the overall results."
Alternatives: "a minor contributor to" or "a limited origin of".
Isn't it also a little outing, a small source of pride and accomplishment, an opportunity for social interaction?
As a result, the combined effect is a small source of c. 1.2 tC·ha− 1 over the last 1000 years.
The campaign has caught on quickly, and has brought a small source of comfort to families stricken with cancer throughout the region.
Product placement is still a small source of revenue for media companies and they would immediately stop it if they thought it was damaging ratings.
Model extrapolation of isoprene emission measurements verifies recently published observations that desert vegetation is a small source of isoprene relative to forests.
EITE companies were excluded because they are a small source of emissions, and imposing economists' typical prescriptions for EITE sectors would have added legal and political risks to the policy.
But shadow banking is a smaller source of finance in China than it was in America.
In particular, national banks are a smaller source of funding to Latino businesses than to entrepreneurs from other ethnic groups.
This would result in a smaller source of asexual parasites for gametocyte production and hence a reduced gametocyte density that makes their detection more difficult.
We find that during mouse development, muscle and fat arise from a mixed progenitor cell pool in the germ layer, but, contrastingly, vascular endothelium in brain derives from a smaller source of progenitor cells.
Only sales of business software, a relatively small source of revenue for the technology giant, increased significantly.
