Author
Langan
21
Soars,
19
Soars
18
BROUKAL
14
Jones
14
Nandy
12
Nunan
12
Swan
10
Greenall
9
Larsen-Freeman,
9
University of Cambridge Local Examinations Syndicate
9
Brown
8
GUFFEY
8
Hartmann
8
BLISS,
7
Badger
7
Blass
7
Blass,
7
Fawcett
7
Fuchs
7
Hartmann,
7
Kirn
7
Lester,
7
MILLER
7
MOLINSKY
7
McDonald,
7
McDowell,
7
Menzies,
7
Pavlik
7
Phillips,
7
Rogers
7
Salomone
7
Stewart,
7
TANKA
7
Werner
7
BONNER,
6
BYRD,
6
FERREE
6
Hornby
6
Jakeman
6
Lesikar
6
Linguaphone Institute Limited
6
MENTEL
6
Reid
6
Root,
6
Sanabria,
6
Walter,
6
Williams,
6
Wyrick
6
AZAR
5
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