Guthrie, L.O.
Factual communication : a handbook American English
Macmillan, 1956
Buku Teks
Allen, W. Stannard
Living English structure
Longman, 1974
Buku Teks
Southwell, E.A.
Working with words : a course in English expression
Longmans, Green, 1947
Buku Teks
Allen, W. Stannard
Living English structure : a practise book for foreign students
Longman, 1974
Buku Teks
English in fact : students book / Michael Lucas
Heinemann Educational Books, 1981
Buku Teks