Lua APA (7ú heag.)

Gass, S. M., & Houck, N. (1999). Interlanguage refusals: A cross-cultural study of Japanese-English. Mouton de Gruyter.

Lua i Stíl Chicago (17ú heag.)

Gass, Susan M., agus Nöel Houck. Interlanguage Refusals: A Cross-cultural Study of Japanese-English. Berlin ; New York: Mouton de Gruyter, 1999.

Lua MLA (9ú heag.)

Gass, Susan M., agus Nöel Houck. Interlanguage Refusals: A Cross-cultural Study of Japanese-English. Mouton de Gruyter, 1999.

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