International Union for Conservation of Nature (IUCN), UN Environment Programme, Food and Agriculture Organization of the United Nations (FAO), & Eau de Web. (2001). ECOLEX: The gateway to environmental law. Food and Agriculture Organization (FAO) of the United Nations : IUCN - Environmental Law Centre : United Nations Environment Programme (UNEP).
Cytowanie według stylu Chicago (wyd. 17)International Union for Conservation of Nature (IUCN), UN Environment Programme, Food and Agriculture Organization of the United Nations (FAO), i Eau de Web. ECOLEX: The Gateway to Environmental Law. Food and Agriculture Organization (FAO) of the United Nations : IUCN - Environmental Law Centre : United Nations Environment Programme (UNEP), 2001.
Cytowanie według stylu MLA (wyd. 8)International Union for Conservation of Nature (IUCN), et al. ECOLEX: The Gateway to Environmental Law. Food and Agriculture Organization (FAO) of the United Nations : IUCN - Environmental Law Centre : United Nations Environment Programme (UNEP), 2001.