Dyfyniad APA

Barnes, D., Forster, C. F., & Hrudey, S. E. (1984). Petroleum and organic chemicals industries. Pitman Advanced Pub. Program.

Dyfyniad Arddull Chicago

Barnes, D., C F. Forster, and S E. Hrudey. Petroleum and Organic Chemicals Industries. Boston: Pitman Advanced Pub. Program, 1984.

Dyfyniad MLA

Barnes, D., et al. Petroleum and Organic Chemicals Industries. Pitman Advanced Pub. Program, 1984.

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