APA Citation

Clasen, M., & Hudson, S. (1982). O.K. Happy english 3 (1° ed.). Chile: Editorial Universitaria.

Chicago Style Citation

Clasen, Mónica, and Silvia Hudson. O.K. Happy English 3. 1° ed. Chile: Editorial Universitaria, 1982.

MLA Citation

Clasen, Mónica, and Silvia Hudson. O.K. Happy English 3. 1° ed. Chile: Editorial Universitaria, 1982.

Warning: These citations may not always be 100% accurate.