Paul Seligson

Essential American English

CEFR B2
Essential American English is a five-level course with a comprehensive digital book for interactive [+]

English ID

CEFR B1
English ID is a fun, engaging four-level series for adults and young adults with an emphasis on [+]

iDentities

CEFR C1
iDentities is a brand-new two-level course for adults and young adults which gives upper intermediate [+]