Gaya APA

Lam, C, B. et al (2012). Sibling Relationships and Empathy Across the Transition to Adolescence . New York: Springer Science+Business Media.

Gaya MLA

Lam, Chun, Bun. et al. "Sibling Relationships and Empathy Across the Transition to Adolescence". New York: Springer Science+Business Media, 2012. e-journal.