Dyfyniad APA

National Institute of Public Health and Environmental Protection. (1992). The environment in Europe: A global perspective. RIVM, National Institute of Public Health and Environmental Protection.

Dyfyniad Arddull Chicago

National Institute of Public Health and Environmental Protection. The Environment in Europe: A Global Perspective. The Netherlands: RIVM, National Institute of Public Health and Environmental Protection, 1992.

Dyfyniad MLA

National Institute of Public Health and Environmental Protection. The Environment in Europe: A Global Perspective. RIVM, National Institute of Public Health and Environmental Protection, 1992.

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