Verdine, Brian N., Zimmermann, Laura, Foster, Lindsey, Marzouk, Maya A., Golinkoff, Roberta Michnick, Hirsh-Pasek, Kathy, and Newcombe, Nora. Effects of geometric toy design on parent–child interactions and spatial language. Retrieved from https://par.nsf.gov/biblio/10062664. Early Childhood Research Quarterly . Web. doi:10.1016/j.ecresq.2018.03.015.

Verdine, Brian N., Zimmermann, Laura, Foster, Lindsey, Marzouk, Maya A., Golinkoff, Roberta Michnick, Hirsh-Pasek, Kathy, & Newcombe, Nora. Effects of geometric toy design on parent–child interactions and spatial language. Early Childhood Research Quarterly, (). Retrieved from https://par.nsf.gov/biblio/10062664. https://doi.org/10.1016/j.ecresq.2018.03.015

Verdine, Brian N., Zimmermann, Laura, Foster, Lindsey, Marzouk, Maya A., Golinkoff, Roberta Michnick, Hirsh-Pasek, Kathy, and Newcombe, Nora. "Effects of geometric toy design on parent–child interactions and spatial language". Early Childhood Research Quarterly (). Country unknown/Code not available. https://doi.org/10.1016/j.ecresq.2018.03.015. https://par.nsf.gov/biblio/10062664.

@article{osti_10062664,
place = {Country unknown/Code not available}, title = {Effects of geometric toy design on parent–child interactions and spatial language}, url = {https://par.nsf.gov/biblio/10062664}, DOI = {10.1016/j.ecresq.2018.03.015}, abstractNote = {}, journal = {Early Childhood Research Quarterly}, author = {Verdine, Brian N. and Zimmermann, Laura and Foster, Lindsey and Marzouk, Maya A. and Golinkoff, Roberta Michnick and Hirsh-Pasek, Kathy and Newcombe, Nora}, }