Citazione Stile APA (7a Edizione)

Havighurst, R. J. (1972). Development tasks and education (3rd ed.). David McKay Company, Inc..

Citazione stile Chigago Style (17a edizione)

Havighurst, Robert James. Development Tasks and Education. 3rd ed. New york: David McKay Company, Inc., 1972.

Citatione MLA (8a ed.)

Havighurst, Robert James. Development Tasks and Education. 3rd ed. David McKay Company, Inc., 1972.