Missing Title -- Perseus

For some reason, the citation information for this Perseus resource doesn't include the title of the work. I have to assume that is a mistake.
[1] These were the events of that year, to pass over minor details. But Julian, who had already been consul three times, assumed the chief magistracy for the fourth time, taking as his colleague in the office Sallustius, prefect of Gaul. And for a private citizen to be associated with the reigning emperor seemed an innovation which no one recalled to have been made since Diocletian and Aristobulus.
Marcellinus, A. Vol. 2: With An English Translation (J. C. Rolfe, Ed.) (311). Medford, MA: Cambridge, Mass., Harvard University Press; London, William Heinemann, Ltd.
Fwiw, Encyclopedia Brittanica lists the title as "Rerum gestarum libri". For whatever reason, Wikipedia refers to it as "Res Gestae".
In the end, I think having the title of a work in its citation is good form. [8-|]
ASUS ProArt x570s Creator, AMD R9 5950x, HyperX 64gb 3600 RAM, ASUS Strix RTX 2080 ti
"The Unbelievable Work...believe it or not." Little children...Biblical prophecy is not Christianity's friend.