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"EFK." Fullformexpand.com, https://www.fullformexpand.com/efk/204749. Accessed 9 Jan. 2026.
Fullformexpand.com, 2026. "EFK." Accessed January 9, 2026. https://www.fullformexpand.com/efk/204749.
"EFK." (n.d.). Fullformexpand.com. Retrieved January 9, 2026, from https://www.fullformexpand.com/efk/204749.
EFK. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/efk/204749 (Accessed: 9 January 2026).