Ancient sources

For students in Ancient Civilizations, here's the list of ancient sources suitable for the second paper:

Julius Caesar, The Conquest of Gaul (usually called The Gallic War)

Euripides, Medea and Other Plays

Plautus, The Pot of Gold and Other Plays

Tacitus, The Annals of Imperial Rome

Thucydides, The History of the Peloponnesian War

All of these are conveniently available in Penguin Classics versions.