REFERENCES
- García, Mary Ellen, and Tracy Terrell. 1977. “Is the mood in Spanish subject to variable constraints?” Studies in Romance linguistics. ed. Michio Peter Hagiwara. Rowley, MA: Newbury House. pp. 214–226.
- Lantolf, James P. 1978. “The variable constraints on mood in Puerto Ri can-Ameri can Spanish.” Contemporary studies in Romance linguistics. ed. Margarita Suñer. Washington, DC: Georgetown University Press. pp. 193–217.