APA   Click to copy
Simms, N. K., & Gentner, D. (2019). Finding the middle: Spatial language and spatial reasoning. Cognitive Development.

Chicago/Turabian   Click to copy
Simms, Nina K, and D. Gentner. “Finding the Middle: Spatial Language and Spatial Reasoning.” Cognitive development (2019).

MLA   Click to copy
Simms, Nina K., and D. Gentner. “Finding the Middle: Spatial Language and Spatial Reasoning.” Cognitive Development, 2019.

@article{nina2019a,
  title = {Finding the middle: Spatial language and spatial reasoning},
  year = {2019},
  journal = {Cognitive development},
  author = {Simms, Nina K and Gentner, D.}
}