Cita APA (7a ed.)

HILL, J., & HURST, R. (1989). Grammar and practice. LTP and LPPPB UT.

Cita Chicago Style (17a ed.)

HILL, Jimmie, y Rosalyn HURST. Grammar and Practice. United Kingdom;Jakarta: LTP and LPPPB UT, 1989.

Cita MLA (9a ed.)

HILL, Jimmie, y Rosalyn HURST. Grammar and Practice. LTP and LPPPB UT, 1989.