APA (7th ed.) Citation

Asimov, I. (2016). Prelude to foundation. Harper Collins.

Chicago Style (17th ed.) Citation

Asimov, Isaac. Prelude to Foundation. London: Harper Collins, 2016.

MLA (9th ed.) Citation

Asimov, Isaac. Prelude to Foundation. Harper Collins, 2016.

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