The ITI, a UK-based institute for translators, has a useful guide featuring tips for buying translations:
https://www.iti.org.uk/pdf/getting-it-right/english-uk.pdf
https://www.iti.org.uk/pdf/getting-it-right/french.pdf
https://www.iti.org.uk/pdf/getting-it-right/german.pdf
Find out more about the Austrian Translators’ and Interpreters’ Association here:
