APA цитиране

Swan, T., & Westvik, O. J. (1997). Modality in Germanic languages: Historical and comparative perspectives. Berlin ; New York: Mouton de Gruyter.

Чикагска система за цитиране

Swan, Toril., и Olaf Jansen Westvik. Modality in Germanic Languages: Historical and Comparative Perspectives. Berlin ; New York: Mouton de Gruyter, 1997.

MLA формат за цитиране

Swan, Toril., и Olaf Jansen Westvik. Modality in Germanic Languages: Historical and Comparative Perspectives. Berlin ; New York: Mouton de Gruyter, 1997.