Nielsen, S. N., & Briann D. Fath and other. (2020). A New Ecology system perspective (second edition.). Elsevier.
Citazione stile Chigago Style (17a edizione)Nielsen, Soren Nors, e Briann D. Fath and other. A New Ecology System Perspective. second edition. united Kingdom: Elsevier, 2020.
Citatione MLA (9a ed.)Nielsen, Soren Nors, e Briann D. Fath and other. A New Ecology System Perspective. second edition. Elsevier, 2020.