Lua APA (7ú heag.)

Wartzman, R. (2013). Drucker. TMH.

Lua i Stíl Chicago (17ú heag.)

Wartzman, Rick. Drucker. New Delhi: TMH, 2013.

Lua MLA (9ú heag.)

Wartzman, Rick. Drucker. TMH, 2013.

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