APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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