HURLOCK, E. B. (1980). Development psychology: A life-span approach. Tata McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)HURLOCK, Elizabeth B. Development Psychology: A Life-span Approach. New Delhi: Tata McGraw-Hill, 1980.
Lua MLA (9ú heag.)HURLOCK, Elizabeth B. Development Psychology: A Life-span Approach. Tata McGraw-Hill, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.