Pinker, Steven; Bloom, Paul (December 1990). "Natural Language and Natural Selection". Behavioral and Brain Sciences. 13 (4): 707–727. doi:10.1017/S0140525X00081061. S2CID6167614.
Aaron, P. G.; Joshi, R. Malatesha (September 2006). "Written Language Is as Natural as Spoken language: A Biolinguistic Perspective". Reading Psychology. 27 (4): 263–311. doi:10.1080/02702710600846803. S2CID143184400.
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Pinker, Steven; Bloom, Paul (December 1990). "Natural Language and Natural Selection". Behavioral and Brain Sciences. 13 (4): 707–727. doi:10.1017/S0140525X00081061. S2CID6167614.
Aaron, P. G.; Joshi, R. Malatesha (September 2006). "Written Language Is as Natural as Spoken language: A Biolinguistic Perspective". Reading Psychology. 27 (4): 263–311. doi:10.1080/02702710600846803. S2CID143184400.
Clay, Marie M. (30 April 2015). Record of oral language: observing changes in the acquisition of language structures: a guide for teaching. Auckland, New Zealand: Global Education Systems. ISBN978-0-325-07457-3. OCLC989724897.