Dyfyniad APA

Koning,De H W. (1987). Setting environmental standards: Guidelines for decision making. B R Publishing.

Dyfyniad Arddull Chicago

Koning,De H W. Setting Environmental Standards: Guidelines for Decision Making. New Delhi: B R Publishing, 1987.

Dyfyniad MLA

Koning,De H W. Setting Environmental Standards: Guidelines for Decision Making. B R Publishing, 1987.

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