Cita APA (7th ed.)

Ruf, B. (2007). Christopher Williams: 97,5 Mhz. JRP Ringier [u.a.].

Cita Chicago (17th ed.)

Ruf, Beatrix. Christopher Williams: 97,5 Mhz. Zürich: JRP Ringier [u.a.], 2007.

Cita MLA (8th ed.)

Ruf, Beatrix. Christopher Williams: 97,5 Mhz. JRP Ringier [u.a.], 2007.