Cita APA (7th ed.)

Köstler, M. E. (2000). Shopping Matters. Cornelsen.

Cita Chicago (17th ed.)

Köstler, Maria Elisabeth. Shopping Matters. Berlin: Cornelsen, 2000.

Cita MLA (8th ed.)

Köstler, Maria Elisabeth. Shopping Matters. Cornelsen, 2000.

Atenció: Aquestes cites poden no estar 100% correctes.