Cita APA (7th ed.)
Bals, L. (2008). Sourcing of services: International aspects and complex categories. Gabler.
Cita Chicago (17th ed.)
Bals, Lydia. Sourcing of Services: International Aspects and Complex Categories. Wiesbaden: Gabler, 2008.
Cita MLA (9th ed.)
Bals, Lydia. Sourcing of Services: International Aspects and Complex Categories. Gabler, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.