Dyfyniad APA

Wells, P., Butler, J., & Hughes, J. (1995). Exxon Valdez oil spill: Fate and effects in Alaskan waters. American Society for Testing and Materials.

Dyfyniad Arddull Chicago

Wells, P.G, J.N Butler, and J.S Hughes. Exxon Valdez Oil Spill: Fate and Effects in Alaskan Waters. Philadelphia, PA: American Society for Testing and Materials, 1995.

Dyfyniad MLA

Wells, P.G, et al. Exxon Valdez Oil Spill: Fate and Effects in Alaskan Waters. American Society for Testing and Materials, 1995.

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