APA (7th ed.) Citation

(1973). <The >Robert Sheckley omnibus. Penguin Books.

Chicago Style (17th ed.) Citation

<The >Robert Sheckley Omnibus. Penguin Books, 1973.

MLA (8th ed.) Citation

<The >Robert Sheckley Omnibus. Penguin Books, 1973.

Warning: These citations may not always be 100% accurate.