APA

KETCHUM M. S., . (1924). Structural engineers handbook. New York: McGraw-Hill Publishing Company.

Chicago

KETCHUM Milo S, . 1924. Structural engineers handbook. New York: McGraw-Hill Publishing Company.

Harvard

KETCHUM M. S., . (1924). Structural engineers handbook. New York: McGraw-Hill Publishing Company.

MLA

KETCHUM Milo S, . Structural engineers handbook. New York: McGraw-Hill Publishing Company. 1924.