The phrase "constitute the source" is correct and usable in written English.
It is commonly used when referring to the origin of something, like a specific book or document that provides support for a certain opinion or statement. For example, you might say, "The quotes from the novel constitute the source of evidence for this opinion."
Stem cells constitute the source of differentiated cells for the generation of tissues during development and for regeneration of tissues that are diseased or injured postnatally.
The reconstructed pressure fluctuations on the airfoil surface constitute the source term for Curle's aeroacoustic analogy, which was employed in both the distributed and compact formulation to estimate the noise emission from PIV.
All distinct source IP addresses retrieved from the flows in DF j, which are related to the destination port j, constitute the source IP set denoted as DSIP j.
Evidence has been given that protein amino acid sequences and their tertiary structures constitute the source and the destination of a digital communication channel.
Different confounding factors may constitute the source of these inconsistencies.
With this extension, 74 138 persons constitute the source population.
Upland zones constitute the sources of NO−3 and participate in down-slope transport, while riparian areas act as sinks for NO−3 and are responsible for its depletion.
The deposit morphology was simply changed by varying the grain mean size of the powder constituting the source.
Mackenzie (1984) stated that relative amount of C27, C28 and C29 steranes differs with organic matter that constitutes the source rock reflecting different depositional environments.
All distinct source IP addresses retrieved from the flows in SF i, which are related to the source port i, constitutes the source IP set denoted as SSIP i.
