Letkeman, C. (2021). Stars. Smartbook Media Inc.
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/756
The Chicago Manual of Style (Chicago)
Letkeman, Candice. Stars. Space Systems: Patterns and Cycles. New York: Smartbook Media Inc., 2021,
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/756. Accessed
14 Feb. 2026.
The Modern Language Association of America (MLA)
Letkeman, Candice. Stars. Smartbook Media Inc., 2021. Space Systems: Patterns and Cycles. Lightbox Nonfiction Subscription,
https://learn.openlightbox.com/TASubscription/92fe5023-7012-4c62-a2bf-77a2d5dd0963/9081e918-aca7-4d85-8f61-2ac49ebd27ee/5/756.
