APA استشهاد

Kerf,Michel. (1998). Concessions for infrastructure: A guide to their design and award. World Bank.

استشهاد بنمط شيكاغو

Kerf,Michel. Concessions for Infrastructure: A Guide to Their Design and Award. Washington: World Bank, 1998.

MLA استشهاد

Kerf,Michel. Concessions for Infrastructure: A Guide to Their Design and Award. World Bank, 1998.