Cita APA (7a ed.)

Etherton, A. R. B. (1994). General Certificate English. Nelson.

Cita Chicago Style (17a ed.)

Etherton, A. R. B. General Certificate English. Walton-on-Thames: Nelson, 1994.

Cita MLA (8a ed.)

Etherton, A. R. B. General Certificate English. Nelson, 1994.