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"GBGM." Fullformexpand.com, https://www.fullformexpand.com/gbgm/597529. Accessed 31 Dec. 2025.
Fullformexpand.com, 2025. "GBGM." Accessed December 31, 2025. https://www.fullformexpand.com/gbgm/597529.
"GBGM." (n.d.). Fullformexpand.com. Retrieved December 31, 2025, from https://www.fullformexpand.com/gbgm/597529.
GBGM. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/gbgm/597529 (Accessed: 31 December 2025).