APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, Salkie, R., Busuttil, P., & Auwera, J. v. d. (2009). Modality in English: Theory and description. Mouton de Gruyter.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, Raphael Salkie, Pierre Busuttil, ба Johan van der Auwera. Modality in English: Theory and Description. Berlin ; New York: Mouton de Gruyter, 2009.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, et al. Modality in English: Theory and Description. Mouton de Gruyter, 2009.