Cita APA (7a ed.)

Abbott, G. (1990). The teaching of english as an international language (1990 ed.). Collins ELT.

Cita Chicago Style (17a ed.)

Abbott, Gerry. The Teaching of English as an International Language. 1990 ed. London and Glasgow: Collins ELT, 1990.

Cita MLA (9a ed.)

Abbott, Gerry. The Teaching of English as an International Language. 1990 ed. Collins ELT, 1990.