Zurbrugg, N. Quantitative or Qualitative? Toward a Definition of Interdisciplinary Problems: Nicholas Zurbrugg. Literature and the other arts.(1981).
Lua i Stíl Chicago (17ú heag.)Zurbrugg, Nicholas. "Quantitative or Qualitative? Toward a Definition of Interdisciplinary Problems: Nicholas Zurbrugg." Literature and the Other Arts.(1981) .
Lua MLA (8ú heag.)Zurbrugg, Nicholas. "Quantitative or Qualitative? Toward a Definition of Interdisciplinary Problems: Nicholas Zurbrugg." Literature and the Other Arts.(1981), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.