Cita APA (7a ed.)

Alexander, L. G. (1993). Longman advanced grammar: Reference and practice. Longman.

Cita Chicago Style (17a ed.)

Alexander, L. G. Longman Advanced Grammar: Reference and Practice. Harlow (UK): Longman, 1993.

Cita MLA (9a ed.)

Alexander, L. G. Longman Advanced Grammar: Reference and Practice. Longman, 1993.