Παραπομπή APA

Kozlowski, J., & Hill, G. (1993). Towards planning for sustainable development: A guide for the ultimate environmental threshold (UET) method. Aldershot: Avebury.

Παραπομπή Chicago Style

Kozlowski, J., and G. Hill. Towards Planning for Sustainable Development: A Guide for the Ultimate Environmental Threshold (UET) Method. Aldershot: Avebury, 1993.

Παραπομπή MLA

Kozlowski, J., and G. Hill. Towards Planning for Sustainable Development: A Guide for the Ultimate Environmental Threshold (UET) Method. Aldershot: Avebury, 1993.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.