APA (7th ed.) Citation

Asimov, I. (1986). Foundation and earth. Doubleday.

Chicago Style (17th ed.) Citation

Asimov, Isaac. Foundation and Earth. Garden City, NY: Doubleday, 1986.

MLA (9th ed.) Citation

Asimov, Isaac. Foundation and Earth. Doubleday, 1986.

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