Song, J. Y., Sundara, M., & Demuth, K. (2009). Phonological Constraints on Children's Production of English Third Person Singular --s. Journal of Speech, Language & Hearing Research, 52(3), 623. https://doi.org/10.1044/1092-4388(2008/07-0258)
Chicago Style (17th ed.) CitationSong, Jae Yung, Megha Sundara, and Katherine Demuth. "Phonological Constraints on Children's Production of English Third Person Singular --s." Journal of Speech, Language & Hearing Research 52, no. 3 (2009): 623. https://doi.org/10.1044/1092-4388(2008/07-0258).
MLA (9th ed.) CitationSong, Jae Yung, et al. "Phonological Constraints on Children's Production of English Third Person Singular --s." Journal of Speech, Language & Hearing Research, vol. 52, no. 3, 2009, p. 623, https://doi.org/10.1044/1092-4388(2008/07-0258).