Cita APA (7th ed.)

HURLOCK, E. B. (1980). Development psychology: A life-span approach. Tata McGraw-Hill.

Cita Chicago (17th ed.)

HURLOCK, Elizabeth B. Development Psychology: A Life-span Approach. New Delhi: Tata McGraw-Hill, 1980.

Cita MLA (9th ed.)

HURLOCK, Elizabeth B. Development Psychology: A Life-span Approach. Tata McGraw-Hill, 1980.

Atenció: Aquestes cites poden no estar 100% correctes.