Lua APA (7ú heag.)

IKPO, J. I. (2006). Building maintenance. Sedyn Publishers.

Lua i Stíl Chicago (17ú heag.)

IKPO, Johnson Ime. Building Maintenance. Sedyn Publishers, 2006.

Lua MLA (9ú heag.)

IKPO, Johnson Ime. Building Maintenance. Sedyn Publishers, 2006.

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