Asimov,Isaac. (1989). The rings of saturn. Hodder and stoughton.
Chicago Style (17th ed.) CitationAsimov,Isaac. The Rings of Saturn. Great Britain: Hodder and stoughton, 1989.
MLA (9th ed.) CitationAsimov,Isaac. The Rings of Saturn. Hodder and stoughton, 1989.
Warning: These citations may not always be 100% accurate.