APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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