Dyfyniad APA
Campbell, H. V. (2002). Pharmaceuticals in the environment: Regulatory and nonregulatory approaches. Environmental Law Institute.
Dyfyniad Arddull Chicago
Campbell, Holly V. Pharmaceuticals in the Environment: Regulatory and Nonregulatory Approaches. Washington, D.C.: Environmental Law Institute, 2002.
Dyfyniad MLA
Campbell, Holly V. Pharmaceuticals in the Environment: Regulatory and Nonregulatory Approaches. Environmental Law Institute, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.