APA

Bowles O., . (1939). The stone industries. New York: McGraw-Hill.

Chicago

Bowles Oliver, . 1939. The stone industries. New York: McGraw-Hill.

Harvard

Bowles O., . (1939). The stone industries. New York: McGraw-Hill.

MLA

Bowles Oliver, . The stone industries. New York: McGraw-Hill. 1939.