Lua APA (7ú heag.)

COOK SARAH. (1995). 20 TRAINING WORKSHOPS FOR CUSTOMER CARE. GOWER.

Lua i Stíl Chicago (17ú heag.)

COOK SARAH. 20 TRAINING WORKSHOPS FOR CUSTOMER CARE. HAMPSHIRE: GOWER, 1995.

Lua MLA (9ú heag.)

COOK SARAH. 20 TRAINING WORKSHOPS FOR CUSTOMER CARE. GOWER, 1995.

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