APA-Zitierstil (7. Ausg.)

Johnstone, N. (2003). The environmental performance of public procurement. Issues of policy coherence ([1st ed.].). OECD. https://doi.org/10.1787/9789264101562-en

Chicago-Zitierstil (17. Ausg.)

Johnstone, Nick. The Environmental Performance of Public Procurement. Issues of Policy Coherence. [1st ed.]. Paris: OECD, 2003. https://doi.org/10.1787/9789264101562-en.

MLA-Zitierstil (9. Ausg.)

Johnstone, Nick. The Environmental Performance of Public Procurement. Issues of Policy Coherence. [1st ed.]. OECD, 2003. https://doi.org/10.1787/9789264101562-en.