Stevens-Long, J., & Commons, M. L. (1992). Adult life: Developmental processes (4th.). Mayfield.
Lua i Stíl Chicago (17ú heag.)Stevens-Long, Judith, agus Michael L. Commons. Adult Life: Developmental Processes. 4th. California: Mayfield, 1992.
Lua MLA (9ú heag.)Stevens-Long, Judith, agus Michael L. Commons. Adult Life: Developmental Processes. 4th. Mayfield, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.