Dyfyniad APA

Ecological Society of America & Ecological Society of China. (2015). Ecosystem health and sustainability. Ecological Society of America.

Dyfyniad Arddull Chicago

Ecological Society of America and Ecological Society of China. Ecosystem Health and Sustainability. Washington, DC: Ecological Society of America, 2015.

Dyfyniad MLA

Ecological Society of America and Ecological Society of China. Ecosystem Health and Sustainability. Ecological Society of America, 2015.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.