Hollingworth, H. L. (1927). Mental growth and decline: A survey of developmental psychology. D. Appleton and company.
Lua i Stíl Chicago (17ú heag.)Hollingworth, Harry L. Mental Growth and Decline: A Survey of Developmental Psychology. New York, London: D. Appleton and company, 1927.
Lua MLA (8ú heag.)Hollingworth, Harry L. Mental Growth and Decline: A Survey of Developmental Psychology. D. Appleton and company, 1927.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.