History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
who having themselves rowed their ships, arrived at Mytilene, and enclosed it all round with a single wall; forts being built on some of the strongest points of it.
Thus the place was vigorously blockaded on both sides, by land and by sea; and the commencement of winter was near at hand.