Dyfyniad APA

Southern, A., & Wallwork,Adrian. (2009). Science and enviroment. Tp. HCM: Tổng hợp.

Dyfyniad Arddull Chicago

Southern, Anna., và Wallwork,Adrian. Science and Enviroment. Tp. HCM: Tổng hợp, 2009.

Dyfyniad MLA

Southern, Anna., và Wallwork,Adrian. Science and Enviroment. Tp. HCM: Tổng hợp, 2009.

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