APA

Shrock R. R., . (1948). Sequence in layered rocks. New York: McGraw-Hill.

Chicago

Shrock Robert R, . 1948. Sequence in layered rocks. New York: McGraw-Hill.

Harvard

Shrock R. R., . (1948). Sequence in layered rocks. New York: McGraw-Hill.

MLA

Shrock Robert R, . Sequence in layered rocks. New York: McGraw-Hill. 1948.