Holmgren, D. (2002). Permaculture: Principles and pathways beyond sustainability. Holmgren design services.
Style de citation Chicago (17e éd.)Holmgren, David. Permaculture: Principles and Pathways Beyond Sustainability. Victoria: Holmgren design services, 2002.
Style de citation MLA (9e éd.)Holmgren, David. Permaculture: Principles and Pathways Beyond Sustainability. Holmgren design services, 2002.
Attention : ces citations peuvent ne pas être correctes à 100%.