Partee, Barbara (2011). "Formal Semantics: Origins, Issues, Early Impact". The Baltic International Yearbook of Cognition, Logic and Communication. Vol. 6. BIYCLC. pp. 1–52. doi:10.4148/biyclc.v6i0.1580.
Lakoff, George (1990). "Invariance hypothesis: is abstract reasoning based on image-schemas?". Cognitive Linguistics. 1 (1): 39–74. doi:10.1515/cogl.1990.1.1.39. S2CID144380802.
Lakoff, George (1990). "Invariance hypothesis: is abstract reasoning based on image-schemas?". Cognitive Linguistics. 1 (1): 39–74. doi:10.1515/cogl.1990.1.1.39. S2CID144380802.