Badger, J., & Reddy, P. (2009). The effects of birth order on personality traits and feelings of academic sibling rivalry. British Psychological Society.
Chicago-referens (17:e uppl.)Badger, JR, och P. Reddy. The Effects of Birth Order on Personality Traits and Feelings of Academic Sibling Rivalry. British Psychological Society, 2009.
MLA-referens (9:e uppl.)Badger, JR, och P. Reddy. The Effects of Birth Order on Personality Traits and Feelings of Academic Sibling Rivalry. British Psychological Society, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.