Ornstein, R., & Carstensen, L. (1988). Psychology: The study of human experience (3rd ed.). Harcourt Brace Jovanovich.
Lua i Stíl Chicago (17ú heag.)Ornstein, Robert, agus Laura Carstensen. Psychology: The Study of Human Experience. 3rd ed. San Diego: Harcourt Brace Jovanovich, 1988.
Lua MLA (9ú heag.)Ornstein, Robert, agus Laura Carstensen. Psychology: The Study of Human Experience. 3rd ed. Harcourt Brace Jovanovich, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.