Cita APA (7a ed.)
Brinton, E. (1974). Active context english. Macmillan education limited.
Cita Chicago Style (17a ed.)
Brinton, Ethel. Active Context English. London: Macmillan education limited, 1974.
Cita MLA (9a ed.)
Brinton, Ethel. Active Context English. Macmillan education limited, 1974.
Precaución: Estas citas no son 100% exactas.