Hakutani, Y. (1972). English Modal Auxiliaries: A Reconsideration. Mouton. https://doi.org/10.1515/ling.1972.10.90.11
Hakutani, Yoshinobu. 1972. “English Modal Auxiliaries: A Reconsideration”. Mouton. https://doi.org/10.1515/ling.1972.10.90.11.
Hakutani, Y. English Modal Auxiliaries: A Reconsideration. Mouton, 1 Jan. 1972, doi:10.1515/ling.1972.10.90.11.