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"GBTB." Fullformexpand.com, https://www.fullformexpand.com/gbtb/156892. Accessed 23 Nov. 2025.
Fullformexpand.com, 2025. "GBTB." Accessed November 23, 2025. https://www.fullformexpand.com/gbtb/156892.
"GBTB." (n.d.). Fullformexpand.com. Retrieved November 23, 2025, from https://www.fullformexpand.com/gbtb/156892.
GBTB. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/gbtb/156892 (Accessed: 23 November 2025).