Cita APA (7th ed.)

Kay, G. (1979). The Economic theory of the working class. Macmillan.

Cita Chicago (17th ed.)

Kay, Geoffrey. The Economic Theory of the Working Class. London: Macmillan, 1979.

Cita MLA (9th ed.)

Kay, Geoffrey. The Economic Theory of the Working Class. Macmillan, 1979.