Ethnologue: Languages of the World (25th edition)
Ethnologue: Languages of the World is an annual reference publication in print and online that provides statistics and other information on the living languages of the world. It was first issued in 1951, and is now published annually by SIL International, a U.S.-based, worldwide, Christian non-profit organization - Wikipedia
Eberhard, David M., Gary F. Simons, and Charles D. Fennig (eds.). 2022. Ethnologue: Languages of the World. Twenty-fifth edition. Dallas, Texas: SIL International. Online version: http://www.ethnologue.com.