Many classes at the AFLCR use a set of standard textbooks to guide study. This is the information you will need to buy these materials on your own.
Covers levels A1 101 through A2 101. The complete set includes both a book and a workbook.
Book ISBN: 978-2-278-06249-2
Workbook ISBN: 978-2-278-06263-8
Covers levels A2 102 through B1. The complete set includes both a book and a workbook.
Book ISBN: 978-2-278-06250-8
Workbook ISBN: 978-2-278-06266-9