You can use the appropriate citation option from below to add a reference to this page.
"4B1." Fullformexpand.com, https://www.fullformexpand.com/4b1/1031822. Accessed 4 Dec. 2025.
Fullformexpand.com, 2025. "4B1." Accessed December 4, 2025. https://www.fullformexpand.com/4b1/1031822.
"4B1." (n.d.). Fullformexpand.com. Retrieved December 4, 2025, from https://www.fullformexpand.com/4b1/1031822.
4B1. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/4b1/1031822 (Accessed: 4 December 2025).