Style de citation APA (7e éd.)

Facchinetti, R., Krug, M., & Palmer, F. (2012). Modality in Contemporary English. De Gruyter Mouton.

Style de citation Chicago (17e éd.)

Facchinetti, Roberta, Manfred Krug, et Frank Palmer. Modality in Contemporary English. Berlin ; Boston: De Gruyter Mouton, 2012.

Style de citation MLA (8e éd.)

Facchinetti, Roberta, et al. Modality in Contemporary English. De Gruyter Mouton, 2012.