Dyfyniad APA

McEldowney, S., Hardman, D. J., & Waite, S. (1993). Pollution: Ecology and biotreatment. Longman Scientific & Technical.

Dyfyniad Arddull Chicago

McEldowney, Sharron, David J. Hardman, and Stephen Waite. Pollution: Ecology and Biotreatment. Essex, Eng: Longman Scientific & Technical, 1993.

Dyfyniad MLA

McEldowney, Sharron, et al. Pollution: Ecology and Biotreatment. Longman Scientific & Technical, 1993.

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