Bybee, J. L., Perkins, R. D., Pagliuca, W., & Perkins, R. (1994). The evolution of grammar: Tense, aspect, and modality in the languages of the world. Chicago: University of Chicago Press.
Παραπομπή Chicago StyleBybee, Joan L., Revere D. Perkins, William Pagliuca, and Revere Perkins. The Evolution of Grammar: Tense, Aspect, and Modality in the Languages of the World. Chicago: University of Chicago Press, 1994.
Παραπομπή MLABybee, Joan L., Revere D. Perkins, William Pagliuca, and Revere Perkins. The Evolution of Grammar: Tense, Aspect, and Modality in the Languages of the World. Chicago: University of Chicago Press, 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.