Cita APA (7a ed.)

HORNBY, A. (1972). The progressive English dictionary (2nd ed.). O.U.P..

Cita Chicago Style (17a ed.)

HORNBY, A.S. The Progressive English Dictionary. 2nd ed. London: O.U.P., 1972.

Cita MLA (9a ed.)

HORNBY, A.S. The Progressive English Dictionary. 2nd ed. O.U.P., 1972.