Conrad, J., & Seymour-Smith,Martin. (1984). The secret agent: A simple tale. Oxford University Press; Penguin Books.

Conrad, Joseph, and Seymour-Smith,Martin. The Secret Agent: A Simple Tale. Oxford [England] ; New York; London: Oxford University Press; Penguin Books, 1984.

Conrad, Joseph, and Seymour-Smith,Martin. The Secret Agent: A Simple Tale. Oxford University Press; Penguin Books, 1984.