Bybee, J. L., Perkins, R. D., & Pagliuca, W. (1994). The evolution of grammar: Tense, aspect, and modality in the languages of the world. London : University of Chicago Press.
Citazione stile Chigago Style (17a edizione)Bybee, Joan L., Revere Dale Perkins, e William Pagliuca. The Evolution of Grammar: Tense, Aspect, and Modality in the Languages of the World. Chicago: London : University of Chicago Press, 1994.
Citatione MLA (8a ed.)Bybee, Joan L., et al. The Evolution of Grammar: Tense, Aspect, and Modality in the Languages of the World. London : University of Chicago Press, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.