Cita APA (7a ed.)

Higgins, M. (1989). Composition through grammar 1. Longman.

Cita Chicago Style (17a ed.)

Higgins, Muriel. Composition Through Grammar 1. Essex: Longman, 1989.

Cita MLA (8a ed.)

Higgins, Muriel. Composition Through Grammar 1. Longman, 1989.