Lua APA (7ú heag.)

Kessler, C. (1993). International Scientific Cooperation, Consolidated report of activities, 1987 - 90. s.n.

Lua i Stíl Chicago (17ú heag.)

Kessler, C. International Scientific Cooperation, Consolidated Report of Activities, 1987 - 90. s.l: s.n, 1993.

Lua MLA (9ú heag.)

Kessler, C. International Scientific Cooperation, Consolidated Report of Activities, 1987 - 90. s.n, 1993.

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