APA

Shaffner F. I., . (1936). The problem of investment. New York: J. Wiley & sons.

Chicago

Shaffner Felix Ira, . 1936. The problem of investment. New York: J. Wiley & sons.

Harvard

Shaffner F. I., . (1936). The problem of investment. New York: J. Wiley & sons.

MLA

Shaffner Felix Ira, . The problem of investment. New York: J. Wiley & sons. 1936.