The temple was peripteral with 46 columns in its peristyle.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1" by Various
The temple seems to have been hexastyle peripteral, but all trace of the cella has disappeared.
"Portuguese Architecture" by Walter Crum Watson
The form of the building is that known as amphiprostyle peripteral hexastyle.
"A Catalogue of Sculpture in the Department of Greek and Roman Antiquities, British Museum, Volume I (of 2)" by A. H. Smith