Cita APA (7a ed.)

Johnstone, H. W. (1959). Philosophy and argument. Pennsylvania State University Press.

Cita Chicago Style (17a ed.)

Johnstone, Henry W. Philosophy and Argument. [University Park]: Pennsylvania State University Press, 1959.

Cita MLA (9a ed.)

Johnstone, Henry W. Philosophy and Argument. Pennsylvania State University Press, 1959.