Willis, J. (2020). Magma. Smartbook Media Inc.
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/359
The Chicago Manual of Style (Chicago)
Willis, John. Magma. The Rock Cycle. New York: Smartbook Media Inc., 2020,
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/359. Accessed
14 Feb. 2026.
The Modern Language Association of America (MLA)
Willis, John. Magma. Smartbook Media Inc., 2020. The Rock Cycle. Lightbox Nonfiction Subscription,
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/359.
