Harjes, e. b. H. E. a. H. ACOUSTICAL imaging volume 19 proceedings of the 19th International Symposium, April 3-5, 1991. Plenum Press.
Lua i Stíl Chicago (17ú heag.)Harjes, edited by Helmut Ermert and Hans-Peter. ACOUSTICAL Imaging Volume 19 Proceedings of the 19th International Symposium, April 3-5, 1991. Plenum Press.
Lua MLA (8ú heag.)Harjes, edited by Helmut Ermert and Hans-Peter. ACOUSTICAL Imaging Volume 19 Proceedings of the 19th International Symposium, April 3-5, 1991. Plenum Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.