(1973). <The >Robert Sheckley omnibus. Penguin Books.
Chicago Style aipamena<The >Robert Sheckley Omnibus. Penguin Books, 1973.
MLA aipamena<The >Robert Sheckley Omnibus. Penguin Books, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena