APA

American Institute of Banking, Crocker L. G., . (1958). Effective speaking. New York: American Institute of Banking, Section American Bankers Association.

Chicago

American Institute of Banking, Crocker Lionel George, . 1958. Effective speaking. New York: American Institute of Banking, Section American Bankers Association.

Harvard

American Institute of Banking, Crocker L. G., . (1958). Effective speaking. New York: American Institute of Banking, Section American Bankers Association.

MLA

American Institute of Banking, Crocker Lionel George, . Effective speaking. New York: American Institute of Banking, Section American Bankers Association. 1958.