Green, George S.
The college hornbook I: a system for sentence structure / by George S. Green.
Holt, Rinehart and Winston, 1972
 Buku Teks
Peters, Pam
The Cambridge guide to English usage
Cambridge University Press, 2006
 Buku Referensi
Fowler, H. W. (Henry Watson), 1858-1933
A dictionary of modern English usage
Oxford University Press, 1965
 Buku Referensi
Fowler, H. W. (Henry Watson), 1858-1933
A dictionary of modern English usage
Oxford University Press, 1983
 Buku Referensi
Fowler, H. W. (Henry Watson), 1858-1933
A dictionary of modern English usage
Oxford University Press, 1950 ; 1952
 Buku Referensi