Cita APA

Elaine Walker. (1994). Grammar practice for elementary students with answer key. London: Longman.

Chicago Style Citation

Elaine Walker. Grammar Practice for Elementary Students With Answer Key. London: Longman, 1994.

Cita MLA

Elaine Walker. Grammar Practice for Elementary Students With Answer Key. London: Longman, 1994.

Atenció: Aquestes cites poden no estar 100% correctes.