Hypercohomology of a dg-algebra

Can someone give me a reference (note I am looking for a reference and not a proof) for the following:

If a complex $C$ has a dg-algebra structure, then the hypercohomology $H^0R\pi_*C$ has an algebra structure, and if $M$ is a dg-module for $C$, then $H^0R\pi_*M$ is a module under $H^0R\pi_*C$. (Here I am thinking of $C$ as a complex of sheaves on some scheme $S$ with $\pi : S \rightarrow T$, but this should just be a fact of homological algebra.)

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