Translation, revision, editing and transcription

I also need to look at the original document to find out:

- The level of difficulty
- The extent of terminological research needed
- The time-frame required etc.

Interpretation

Hiring a professional interpreter requires you to take into account certain factors:

- The language combinations required
- The form of interpretation best suited to your needs
- The number of interpreters required
- The length and location of the contract
- Transport and lodging for the interpreters etc.