Παραπομπή APA

Robert S Feldman. (2015). Development across the life span (Ed.7.). Pearson.

Παραπομπή Chicago Style

Robert S Feldman. Development Across the Life Span. Ed.7. Delhi: Pearson, 2015.

Παραπομπή MLA

Robert S Feldman. Development Across the Life Span. Ed.7. Pearson, 2015.