Cummins, C., & Syrett, K. (03/19/2019). Oxford handbook of experimental semantics and pragmatics Oxford University Press. doi:10.1093/oxfordhb/9780198791768.013.34
Thornton, Rosalind (2010). "Verb Phrase Ellipsis in Children's Answers to Questions". Language Learning and Development. 6 (1): 1–31. doi:10.1080/15475440903328146. S2CID143090260 – via www.tandfonline.com.
Thornton, Rosalind (2010). "Verb Phrase Ellipsis in Children's Answers to Questions". Language Learning and Development. 6 (1): 1–31. doi:10.1080/15475440903328146. S2CID143090260 – via www.tandfonline.com.