Dyfyniad APA

Bals, L., & Hartmann, E. (2008). Sourcing of services. Nova Science Publishers.

Dyfyniad Arddull Chicago

Bals, Lydia, and Evi Hartmann. Sourcing of Services. New York: Nova Science Publishers, 2008.

Dyfyniad MLA

Bals, Lydia, and Evi Hartmann. Sourcing of Services. Nova Science Publishers, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.