Cita APA (7th ed.)

QUIRK,GREENBAUM. (1987). A UNIVERSITY GRAMMER OF ENGLISH. LONGMAN.

Cita Chicago (17th ed.)

QUIRK,GREENBAUM. A UNIVERSITY GRAMMER OF ENGLISH. ENGLAND: LONGMAN, 1987.

Cita MLA (9th ed.)

QUIRK,GREENBAUM. A UNIVERSITY GRAMMER OF ENGLISH. LONGMAN, 1987.