Sitlington, P. L., Clark, G. M., & Sitlington, p. L. (2006). Transition education and services for students with disabilities (4th ed.). Pearson/Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Sitlington, Patricia L., Gary M. Clark, agus patricia L. Sitlington. Transition Education and Services for Students with Disabilities. 4th ed. Boston: Pearson/Allyn and Bacon, 2006.
Lua MLA (9ú heag.)Sitlington, Patricia L., et al. Transition Education and Services for Students with Disabilities. 4th ed. Pearson/Allyn and Bacon, 2006.
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