Cita APA (7a ed.)

Massey, G. J. (1970). Understanding symbolic logic. Harper & Row.

Cita Chicago Style (17a ed.)

Massey, Gerald J. Understanding Symbolic Logic. New York ; Evanston ; London: Harper & Row, 1970.

Cita MLA (8a ed.)

Massey, Gerald J. Understanding Symbolic Logic. Harper & Row, 1970.