Lepp Friesen, H. (2016). Sedimentary Rocks. Smartbook Media Inc.
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/2415
The Chicago Manual of Style (Chicago)
Friesen, Helen. Sedimentary Rocks. Rock Science. New York: Smartbook Media Inc., 2016,
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/2415. Accessed
28 Jun. 2025.
The Modern Language Association of America (MLA)
Friesen, Helen. Sedimentary Rocks. Smartbook Media Inc., 2016. Rock Science. Lightbox Nonfiction Subscription,
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/2415.
