Marcellinus, Ammianus. Res Gestæ (Achievements). AD 379/AD 391:

Rolfe, John Carew, tr. Ammianus Marcellinus, in Three Volumes, I. London: William Heinemann Ltd, 1935.
https://ia802604.us.archive.org/30/items/ammianusmarcelli01ammiuoft/ammianusmarcelli01ammiuoft.pdf

Rolfe, John Carew, tr. Ammianus Marcellinus, in Three Volumes, II. London: William Heinemann Ltd, 1936.
https://ia801804.us.archive.org/7/items/ammianus-marcellinus-in-three-volumes.-vol.-2-books-xx-xxvi-loeb-315/Ammianus%20Marcellinus%20in%20three%20volumes.%20Vol.2%20Books%20XX-XXVI%20%5BLoeb%20315%5D.pdf

Rolfe, John Carew, tr. Ammianus Marcellinus, in Three Volumes, III. London: William Heinemann Ltd, 1939.
https://ia800906.us.archive.org/14/items/L331AmmianusMarcellinusRomanHistoryIII2731ExcerptaValesiana/L331-Ammianus%20Marcellinus%20Roman%20History%20III%3A27-31%20Excerpta%20Valesiana.pdf