Under the Disability Discrimination Act 1992, both publishers and educational providers have a legal obligation to provide equal access to products and services for all people, regardless of disability.  This means, if a training provider sets a reference book as a part of its learning resources, it has an obligation to ensure that the material is accessible to students with a print disability.  As someone selling a product, publishers also have a responsibility to provide access for people with a print disability.

Currently, there is not a big range of materials readily available in alternative formats.  So it is likely that you will need to convert works into accessible formats for some students.  You might try to negotiate with the copyright holder to provide the material in an accessible format within a reasonable time.  It is most likely, however, that you will need to arrange for the conversion.

Converting materials into a format different from its original can take a lot of time and a lot of money.

You can talk with the VET Disability Support Service (VDSS) about helping to meet the cost of the conversion.