Zimmerman, I. L., Steiner, V. G., & Pond, R. E. (2012). PLS-5: Preschool Language Scales (Fifth Edition, Spanish edition.). Pearson/PsychCorp.
Cita Chicago Style (17a ed.)Zimmerman, Irla Lee, Violette G. Steiner, y Roberta Evatt Pond. PLS-5: Preschool Language Scales. Fifth Edition, Spanish edition. Bloomington, IN: Pearson/PsychCorp, 2012.
Cita MLA (9a ed.)Zimmerman, Irla Lee, et al. PLS-5: Preschool Language Scales. Fifth Edition, Spanish edition. Pearson/PsychCorp, 2012.
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