It sounds like you're using the word "correlation" to refer to different modes of causation, which is potentially confusing; "correlation" just refers to certain kinds of association.

It's trivial to dig up citations for correlations between race & IQ. Distinguishing between the two causal models of racial genetic differences → IQ and racial genetic differences ↔ culture → IQ, which I think is what you're getting at, is a distinct and more vexed issue. Still, the first citation in that Wikipedia article is of a paper that clearly favours the first model over the second:

The hereditarian model of Black–White IQ differences proposed in Section 2 (50% genetic and 50% environmental), far from precluding environmental factors, requires they be found. Although evidence in Sections 3 to 11 provided strong support for the genetic component of the model, evidence from Section 12 was unable to identify the environmental component. On the basis of the present evidence, perhaps the genetic component must be given greater weight and the environmental component correspondingly reduced.

As it happens, I find this particular paper flawed in various ways, but it is a citation of the sort you're asking for.