Dyfyniad APA

Shrock, R. R. (1948). Sequence in layered rocks. McGraw hill.

Dyfyniad Arddull Chicago

Shrock, Robert R. Sequence in Layered Rocks. London: McGraw hill, 1948.

Dyfyniad MLA

Shrock, Robert R. Sequence in Layered Rocks. McGraw hill, 1948.

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