APA (7th ed.) Citation

Donnelly, I. Ragnarok: The Age of Fire and Gravel.

Chicago Style (17th ed.) Citation

Donnelly, Ignatius. Ragnarok: The Age of Fire and Gravel.

MLA (9th ed.) Citation

Donnelly, Ignatius. Ragnarok: The Age of Fire and Gravel.

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