Dyfyniad APA

Koenig, R. A., & Taylor, J. P. (1988). Protection of pipelines through highway roadbeds. Transportation Research Board, National Research Council.

Dyfyniad Arddull Chicago

Koenig, R. A., and J. P. Taylor. Protection of Pipelines Through Highway Roadbeds. Washington, D.C: Transportation Research Board, National Research Council, 1988.

Dyfyniad MLA

Koenig, R. A., and J. P. Taylor. Protection of Pipelines Through Highway Roadbeds. Transportation Research Board, National Research Council, 1988.

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