Dyfyniad APA

Editors Lienhart , D. A. (1993). Rock for erosion control. American society for testing and materials.

Dyfyniad Arddull Chicago

Editors Lienhart , David A. Rock for Erosion Control. Philadelphia P. A.: American society for testing and materials, 1993.

Dyfyniad MLA

Editors Lienhart , David A. Rock for Erosion Control. American society for testing and materials, 1993.

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