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"PT-18." Fullformexpand.com, https://www.fullformexpand.com/pt-18/459241. Accessed 16 Nov. 2025.
Fullformexpand.com, 2025. "PT-18." Accessed November 16, 2025. https://www.fullformexpand.com/pt-18/459241.
"PT-18." (n.d.). Fullformexpand.com. Retrieved November 16, 2025, from https://www.fullformexpand.com/pt-18/459241.
PT-18. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/pt-18/459241 (Accessed: 16 November 2025).