Lua APA (7ú heag.)

(2004). The human factors of transport signs. CRC.

Lua i Stíl Chicago (17ú heag.)

The Human Factors of Transport Signs. CRC, 2004.

Lua MLA (8ú heag.)

The Human Factors of Transport Signs. CRC, 2004.

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