Stassen 2013. Stassen, Leon (2013). "Comparative Constructions". In Dryer, Matthew; Haspelmath, Martin (eds.). The World Atlas of Language Structures Online. Leipzig: Max Planck Institute for Evolutionary Anthropology. Archived from the original on April 1, 2022. Retrieved April 3, 2022.
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Stassen 2013. Stassen, Leon (2013). "Comparative Constructions". In Dryer, Matthew; Haspelmath, Martin (eds.). The World Atlas of Language Structures Online. Leipzig: Max Planck Institute for Evolutionary Anthropology. Archived from the original on April 1, 2022. Retrieved April 3, 2022.