Santrock, J. W. (1999). Life - span development (7th ed.). Brown & Benchmark.
Lua i Stíl Chicago (17ú heag.)Santrock, John W. Life - Span Development. 7th ed. Chicago: Brown & Benchmark, 1999.
Lua MLA (9ú heag.)Santrock, John W. Life - Span Development. 7th ed. Brown & Benchmark, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.