Bjorklund, B. R. (2011). The journey of adulthood (7th edition.). Pearson Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Bjorklund, Barbara R. The Journey of Adulthood. 7th edition. Upper Saddle River, N.J: Pearson Prentice Hall, 2011.
Lua MLA (9ú heag.)Bjorklund, Barbara R. The Journey of Adulthood. 7th edition. Pearson Prentice Hall, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.