Cita APA (7th ed.)

ebrary, Inc, & Coles, P. (2006). Sibling relationships. Karnac.

Cita Chicago (17th ed.)

ebrary, Inc, i Prophecy Coles. Sibling Relationships. London ; New York: Karnac, 2006.

Cita MLA (9th ed.)

ebrary, Inc, i Prophecy Coles. Sibling Relationships. Karnac, 2006.