APA (7th ed.) Citation

Gemmell, D. (1989). The last guardian: The stones of power. Del Rey Books.

Chicago Style (17th ed.) Citation

Gemmell, David. The Last Guardian: The Stones of Power. New York: Del Rey Books, 1989.

MLA (8th ed.) Citation

Gemmell, David. The Last Guardian: The Stones of Power. Del Rey Books, 1989.