Dyfyniad APA

Andrew , R., & Jackson, J. M. (1998). Environmental science: The natural environment and human impact. Longman.

Dyfyniad Arddull Chicago

Andrew , R.W, and Julie M. Jackson. Environmental Science: The Natural Environment and Human Impact. London: Longman, 1998.

Dyfyniad MLA

Andrew , R.W, and Julie M. Jackson. Environmental Science: The Natural Environment and Human Impact. Longman, 1998.

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