Cita APA (7a ed.)

Etherton, A. (1968). Objective english tests intermediate level. Longman.

Cita Chicago Style (17a ed.)

Etherton, A.R.B. Objective English Tests Intermediate Level. London: Longman, 1968.

Cita MLA (9a ed.)

Etherton, A.R.B. Objective English Tests Intermediate Level. Longman, 1968.