Livy 42.28.10–12. Discussed at length by Hans-Friedrich Mueller, Roman religion in Valerius Maximus (Routledge, 2002), p. 35ff. online.
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Livy39.39.1–15, but Livy says Fulvius Flaccus was only aedile designate; see Broughton, MRR1, p. 377, note 1, for a summary of the constitutional intricacies, based on Theodor Mommsen's arguments.
Valerius Maximus (1.1.20) places this temple in Locri, Bruttium, but elsewhere correctly identifies its location as Croton, also in modern-day Calabria; see also Livy 42.3.1–11.