Lua APA (7ú heag.)

Ferreira, L. A. (1978). Verbs in action: Intermadiate drills. Newbury House.

Lua i Stíl Chicago (17ú heag.)

Ferreira, Linda A. Verbs in Action: Intermadiate Drills. Rowley, Mass: Newbury House, 1978.

Lua MLA (9ú heag.)

Ferreira, Linda A. Verbs in Action: Intermadiate Drills. Newbury House, 1978.

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