Macdonald, Sir George (1934). The Roman wall in Scotland, by Sir George Macdonald (2d ed., rev., enl., and in great part rewritten ed.). Oxford: The Clarendon press. pp. 170–173. Retrieved 11 October 2017.
Macdonald, Sir George (1934). The Roman wall in Scotland, by Sir George Macdonald (2d ed., rev., enl., and in great part rewritten ed.). Oxford: The Clarendon press. pp. 326–328. Retrieved 11 October 2017.
Macdonald, Sir George (1934). The Roman wall in Scotland, by Sir George Macdonald (2d ed., rev., enl., and in great part rewritten ed.). Oxford: The Clarendon press. pp. 376–377. Retrieved 11 October 2017.
Macdonald, Sir George (1934). The Roman wall in Scotland, by Sir George Macdonald (2d ed., rev., enl., and in great part rewritten ed.). Oxford: The Clarendon press. pp. 377–381. Retrieved 11 October 2017.
Macdonald, Sir George (1934). The Roman wall in Scotland, by Sir George Macdonald (2d ed., rev., enl., and in great part rewritten ed.). Oxford: The Clarendon press. pp. 381–383. Retrieved 11 October 2017.
Macdonald, Sir George (1934). The Roman wall in Scotland, by Sir George Macdonald (2d ed., rev., enl., and in great part rewritten ed.). Oxford: The Clarendon press. pp. 433–434. Retrieved 11 October 2017.
