Lua APA (7ú heag.)

Beri. Marketing Research. Tata McGraw Hill.

Lua i Stíl Chicago (17ú heag.)

Beri. Marketing Research. Tata McGraw Hill.

Lua MLA (9ú heag.)

Beri. Marketing Research. Tata McGraw Hill.

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