APA (7th ed.) Citation

DeKeyser, R. M. (2013). Age Effects in Second Language Learning: Stepping Stones Toward Better Understanding. Language learning, 63(s1), 52-67. https://doi.org/10.1111/j.1467-9922.2012.00737.x

Chicago Style (17th ed.) Citation

DeKeyser, Robert M. "Age Effects in Second Language Learning: Stepping Stones Toward Better Understanding." Language Learning 63, no. s1 (2013): 52-67. https://doi.org/10.1111/j.1467-9922.2012.00737.x.

MLA (9th ed.) Citation

DeKeyser, Robert M. "Age Effects in Second Language Learning: Stepping Stones Toward Better Understanding." Language Learning, vol. 63, no. s1, 2013, pp. 52-67, https://doi.org/10.1111/j.1467-9922.2012.00737.x.