The phrase "source of assurance" is correct and usable in written English.
You can use this phrase to refer to a person, organization, or object which provides a feeling of confidence, safety, or security. For example, you could say, "His calm demeanor was a source of assurance during the storm."
Ellis's childhood was haunted by her family's persecution in Iraq under the Ba'athist regime, and books became a vital refuge as well as a source of assurance that "imagination, instead of being a flaw, might be my best hope".
He is also an extra defender, the best "sweeper-keeper" in the game, racing from goal throughout this World Cup to clear up trouble, acting as an extra shield and source of assurance for his defence.
The first experiment employed a 2×2 2 between-participants design in which we manipulate the type of assurance (CA or CCM) and the source of assurance (internal or external auditors).
It is important to note that for these retained loci, we had two sources of assurance of their low-copy (likely single-copy) status: (a) they are single-copy in Arabidopsis, and (b) they had coverage consistent with single-copy status in the H. parviflora Bartl.
Mr Corker did not reveal the source of his assurance, and his statement runs contrary to VW's public statements.
Withdrawing the troops would eliminate a fundamental source of mutual assurance in Israeli-Egyptian relandons, and would send the wrong signal at a time of extreme volatility in the Middle East.
The source of that assurance is generally believed to be Ashcroft, a man in thrall to one of the most pernicious images in rock: that of the genius poet, a direct descendant of the romantics, unbearably moved by life's horrors and beauties.
Additionally, documentation is a valuable source of quality assurance because it ensures the transparency of the process and the effective evaluation of the completed building.
But the true source of his endless self-assurance was not his height, I thought, but his abiding sense of entitlement and invulnerability.
Frank's profound dedication to our mission could always be counted on as a source of moral support and assurance in even the most challenging times.
"Rather than act as a source of stability and provide assurance to shareholders, this board has led the company through a highly publicized spate of corporate governance breakdowns while amassing an astounding" funding gap, Mr. Icahn wrote in the letter.
