Tohutoro APA (7th ed.)
Bals, L., & Hartmann, E. (2008). Sourcing of services. Nova Science Publishers.
Tohutoru Kātū Chicago (17th ed.)
Bals, Lydia, me Evi Hartmann. Sourcing of Services. New York: Nova Science Publishers, 2008.
Tohutoro MLA (9th ed.)
Bals, Lydia, me Evi Hartmann. Sourcing of Services. Nova Science Publishers, 2008.
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