Dacey, J., & Travers, J. (1991). Human development: Across the lifespan. WCB.
Lua i Stíl Chicago (17ú heag.)Dacey, John, agus John Travers. Human Development: Across the Lifespan. Boulevard: WCB, 1991.
Lua MLA (9ú heag.)Dacey, John, agus John Travers. Human Development: Across the Lifespan. WCB, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.