The phrase "a source of worry for" is correct and usable in written English.
It can be used when discussing something that causes concern or anxiety for someone or a group.
Example: "The rising crime rates in the city have become a source of worry for local residents."
Alternatives: "a cause for concern for" or "a point of anxiety for".
Latin America is also a source of worry for Taiwan.
"It is true that it is a source of worry for many people concerned about the future of Iraq and the process of democracy in Iraq".
But Italy appears to be a source of worry for investors about whether the country will be able to service its debt.
Mr. Saif said that the "backlash, animosity and all kind of negative feelings emerging" toward the Syrian refugees was a source of worry for the government.
Such rhetoric is not uncommon, but the group's increasing involvement in the conflict has become a source of worry for Middle Eastern governments and Western officials.
Forbes sees this as part of Facebook's mobile monetization plan, long a source of worry for investors (see, e.g., "Should Facebook Buy Opera?").
Those who knew Haq best described him Saturday as a drifting, sad and mentally troubled figure who was a source of worry and embarrassment for his parents, but not anybody's idea of a political or religious zealot inclined toward violence.
The discourses conveyed contradicting messages that may be a source of worry and confusion for the new parents.
But for most people property is a source of worry.In America the bounce caused by a temporary tax credit for first-time buyers has long since faded.
Even with the Taliban gone, Afghanistan is likely to remain a source of worry and a destabilising force in the region for the foreseeable future.The Soviet heritage is also partly to blame.
Clearly, the former is not a source of worry but the latter suggests that there is room for significant improvement.
