Lua APA (7ú heag.)

Harper, D. (1989). Logo: Theory & practice. Brooks/Cole.

Lua i Stíl Chicago (17ú heag.)

Harper, Dennis. Logo: Theory & Practice. Pacific Grove, Calif: Brooks/Cole, 1989.

Lua MLA (9ú heag.)

Harper, Dennis. Logo: Theory & Practice. Brooks/Cole, 1989.

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