APA

Beardsley M. C., . (1950). Practical logic. New York: Prentice-Hall.

Chicago

Beardsley Monroe C, . 1950. Practical logic. New York: Prentice-Hall.

Harvard

Beardsley M. C., . (1950). Practical logic. New York: Prentice-Hall.

MLA

Beardsley Monroe C, . Practical logic. New York: Prentice-Hall. 1950.