See Allo

Cremona, Marise, author

Macmillan, 1989

Buku Teks

Smith, J. C. (John Cyril), author

Butterworth, 1992

Buku Teks

Curzon, L. B., author

Pitman, 1994

Buku Teks

Allen, Michael J., author

Black Stone Press Limited, 1997

Buku Teks

Smith, J. C. (James Cruickshanks), 1867-1946, author

English Language Book Society, 1988

Buku Teks