Cita APA (7a ed.)

Empson, W. (1966). Seven types of ambiguity (l. ed. 2. impr.). New Directions.

Cita Chicago Style (17a ed.)

Empson, William. Seven Types of Ambiguity. l. ed. 2. impr. New York: New Directions, 1966.

Cita MLA (8a ed.)

Empson, William. Seven Types of Ambiguity. l. ed. 2. impr. New Directions, 1966.