GRAVER, B. (1971). Advanced english practice (2nd ed.). O.U.P.
Citación estilo ChicagoGRAVER, B.D. Advanced English Practice. 2nd ed. London: O.U.P, 1971.
Cita MLAGRAVER, B.D. Advanced English Practice. 2nd ed. O.U.P, 1971.
Warning: These citations may not always be 100% accurate.