The phrase "a prior source" is correct and usable in written English.
It can be used when referring to a source of information or evidence that existed before the current context or discussion.
Example: "The findings in this report are consistent with those from a prior source that examined similar data."
Alternatives: "an earlier source" or "a previous source".
The film is a change of pace for Perry, as it is the first time that he is directing a film based on a prior source, the 1975 Ntozake Shange play For Colored Girls Who Have Considered Suicide When the Rainbow Is Enuf.
Results: This study explores the potential of undirected, confidence-weighted networks, such as those in functional association databases, as a prior source for GRN inference.
Here, it should be noted that, in order to improve the feasibility of above algorithms, a prior source support must be used.
For one thing, she avails herself of all prior sources, some of them unavailable until now.
We did not select any prior sources, nor was the solution constrained to any region within the whole brain volume.
These data were fit using either a standard MNM prior, corresponding to an identity matrix for the prior source covariance component, or MSP, corresponding to several hundred cortical patches (see Friston et al. [ 2008] for more details).
Another enhanced consent form trial was updated from a prior secondary source [ 21].
The model efficiency lies on the detailed representation of the transformer geometry along with the adoption of a particular reduced scalar potential formulation enabling three-dimensional magnetostatic problem solution without prior source field calculation.
I would not be surprised, however, if earlier evidence surfaces someday showing that Niebuhr picked the prayer up from some prior source.
This too looks like a principle that Paine worked out with Jefferson, in 1788-9, when Jefferson first mentions it in his correspondence, although the prior source is likely to be Adam Smith's Wealth of Nations.
Altmann and Stern show that Israeli's text very closely parallels Ibn Luqa's, hence either derived it directly from the former, or they both are quoting the same prior source.
