APA (7th ed.) Citation

Rosset, E. (1995). Keys: English grammar 1, 2 and 3 (New ed.). Editorial Stanley.

Chicago Style (17th ed.) Citation

Rosset, Eduardo. Keys: English Grammar 1, 2 and 3. New ed. Irún, Spain: Editorial Stanley, 1995.

MLA (9th ed.) Citation

Rosset, Eduardo. Keys: English Grammar 1, 2 and 3. New ed. Editorial Stanley, 1995.