Cita APA (7th ed.)

Bartke, S., & Siegmüller, J. (2004). Williams syndrome across languages. John Benjamins Pub..

Cita Chicago (17th ed.)

Bartke, Susanne, i Julia Siegmüller. Williams Syndrome Across Languages. Amsterdam ; Philadelphia: John Benjamins Pub., 2004.

Cita MLA (9th ed.)

Bartke, Susanne, i Julia Siegmüller. Williams Syndrome Across Languages. John Benjamins Pub., 2004.