APA   Click to copy
Camus, A. (1946). The Outsider. (T. by Stuart Gilbert, Ed.). London: Hamilton.

Chicago/Turabian   Click to copy
Camus, Albert. The Outsider. Edited by Translated by Stuart Gilbert. London: Hamilton, 1946.

MLA   Click to copy
Camus, Albert. The Outsider. Edited by Translated by Stuart Gilbert, Hamilton, 1946.

@book{albert1946a,
  title = {The Outsider},
  year = {1946},
  address = {London},
  publisher = {Hamilton},
  author = {Camus, Albert},
  editor = {by Stuart Gilbert, Translated}
}