There are three ways to find a translation service.
The first port of call should be your local directory, e.g. Yellow Pages. If you have a business directory specific to your area, even better. Just search for "translations" or sometimes under "Translators and Interpreters".
Look for classifieds and post some for contacts. In this way, you can find professional translators in Perth online.
Image Source: Google
The second and easiest way to find a translation service is through the Internet. Major search engines like Google, Yahoo! and MSN can display hundreds of lists.
An added benefit of using a search engine is that it allows you to be more specific about your search. For example, if you are looking for a local translation service, enter "Brisbane translation service" or "Perth translation service". If you need a specific language, try something similar to "German Translation Service".
For search engine results, you will be presented with two types of listings, paid listings (advertisements) and organic listings (non-promoted results). It's good to remember that those with organic entries exist for a reason, e.g. Search engines naturally regard them as important sites for translation services.
On the other hand, paid listings will come from companies that need business. This isn't necessarily a negative, but it's good to keep that in mind when choosing.
The last resort to finding a translation service is to ask coworkers, friends, or family. Personal recommendations are always the best.