Dyfyniad APA

Pitts, J. (1984). A manual of geology for civil engineers. Wiley.

Dyfyniad Arddull Chicago

Pitts, John. A Manual of Geology for Civil Engineers. Wiley, 1984.

Dyfyniad MLA

Pitts, John. A Manual of Geology for Civil Engineers. Wiley, 1984.

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