APA (7e ed.) Bronvermelding

Feldman, R. S. (2003). Development across the life span (3ed.). Prentice Halll.

Chicago (17e ed.) Bronvermelding

Feldman, Robert. S. Development Across the Life Span. 3ed. Upper Saddle River: Prentice Halll, 2003.

MLA (9e ed.) Bronvermelding

Feldman, Robert. S. Development Across the Life Span. 3ed. Prentice Halll, 2003.