Lua APA (7ú heag.)

ETHERTON, A. (1977). Contact 3: A secondary english course.-- Ed.Revised. Longman.

Lua i Stíl Chicago (17ú heag.)

ETHERTON, A.R.B. Contact 3: A Secondary English Course.-- Ed.Revised. Kuala Lumpur: Longman, 1977.

Lua MLA (9ú heag.)

ETHERTON, A.R.B. Contact 3: A Secondary English Course.-- Ed.Revised. Longman, 1977.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.