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"GUOK." Fullformexpand.com, https://www.fullformexpand.com/guok/1072707. Accessed 1 Dec. 2025.
Fullformexpand.com, 2025. "GUOK." Accessed December 1, 2025. https://www.fullformexpand.com/guok/1072707.
"GUOK." (n.d.). Fullformexpand.com. Retrieved December 1, 2025, from https://www.fullformexpand.com/guok/1072707.
GUOK. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/guok/1072707 (Accessed: 1 December 2025).