Holmgren, D. (2002). Permaculture: Principles and pathways beyond sustainability. Holmgren design services.
Chicagoスタイル(17版)引用形式Holmgren, David. Permaculture: Principles and Pathways Beyond Sustainability. Victoria: Holmgren design services, 2002.
MLA(9版)引用形式Holmgren, David. Permaculture: Principles and Pathways Beyond Sustainability. Holmgren design services, 2002.
警告: この引用は必ずしも正確ではありません.