APA

Chellis R. D., . (1961). Pile foundations. New York: McGraw-Hill.

Chicago

Chellis Robert Dunning, . 1961. Pile foundations. New York: McGraw-Hill.

Harvard

Chellis R. D., . (1961). Pile foundations. New York: McGraw-Hill.

MLA

Chellis Robert Dunning, . Pile foundations. New York: McGraw-Hill. 1961.