Thomas Elwyn. (1994). Manager's Casebook. Penguin Books.
Chicago Style aipamenaThomas Elwyn. Manager's Casebook. London: Penguin Books, 1994.
MLA aipamenaThomas Elwyn. Manager's Casebook. Penguin Books, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.