Dyfyniad APA

Atkins, H. N. (1980). Highway Materials, Soils and Concreates. Reston.

Dyfyniad Arddull Chicago

Atkins, Harnold. N. Highway Materials, Soils and Concreates. Virginia: Reston, 1980.

Dyfyniad MLA

Atkins, Harnold. N. Highway Materials, Soils and Concreates. Reston, 1980.

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